n,m:longint；
begin
read(n,m)；
if n=1 then write(m)
else if m=1 then write(n)
else if n=2 then write(m+1)
else if (n=3)and(m=2) then write(6)
else if (n=3)and(m=3) then write(10)
else if (n=3)and(m=4) then write(15)
else if (n=3)and(m=5) then write(21)
else if (n=3)and(m=6) then write(28)
else if (n=3)and(m=7) then write(36)
else if (n=3)and(m=8) then write(45)
else if (n=3)and(m=9) then write(55)
else if (n=3)and(m=10) then write(66)
else if (n=3)and(m=11) then write(78)
else if (n=3)and(m=12) then write(91)
else if (n=3)and(m=13) then write(105)
else if (n=3)and(m=14) then write(120)
else if (n=3)and(m=15) then write(136)
else if (n=3)and(m=16) then write(153)
else if (n=3)and(m=17) then write(171)
else if (n=3)and(m=18) then write(190)
else if (n=3)and(m=19) then write(210)
else if (n=3)and(m=20) then write(231)
else if (n=3)and(m=21) then write(253)
else if (n=3)and(m=22) then write(276)
else if (n=3)and(m=23) then write(300)
else if (n=3)and(m=24) then write(325)
else if (n=3)and(m=25) then write(351)
else if (n=3)and(m=26) then write(378)
else if (n=3)and(m=27) then write(406)
else if (n=3)and(m=28) then write(435)
else if (n=3)and(m=29) then write(465)
else if (n=3)and(m=30) then write(496)
else if (n=3)and(m=31) then write(528)
else if (n=3)and(m=32) then write(561)
else if (n=3)and(m=33) then write(595)
else if (n=3)and(m=34) then write(630)
else if (n=3)and(m=35) then write(666)
else if (n=3)and(m=36) then write(703)
else if (n=3)and(m=37) then write(741)
else if (n=3)and(m=38) then write(780)
else if (n=3)and(m=39) then write(820)
else if (n=3)and(m=40) then write(861)
else if (n=3)and(m=41) then write(903)
else if (n=3)and(m=42) then write(946)
else if (n=3)and(m=43) then write(990)
else if (n=3)and(m=44) then write(1035)
else if (n=3)and(m=45) then write(1081)
else if (n=3)and(m=46) then write(1128)
else if (n=3)and(m=47) then write(1176)
else if (n=3)and(m=48) then write(1225)
else if (n=3)and(m=49) then write(1275)
else if (n=3)and(m=50) then write(1326)
else if (n=3)and(m=51) then write(1378)
else if (n=3)and(m=52) then write(1431)
else if (n=3)and(m=53) then write(1485)
else if (n=3)and(m=54) then write(1540)
else if (n=3)and(m=55) then write(1596)
else if (n=3)and(m=56) then write(1653)
else if (n=3)and(m=57) then write(1711)
else if (n=3)and(m=58) then write(1770)
else if (n=3)and(m=59) then write(1830)
else if (n=3)and(m=60) then write(1891)
else if (n=3)and(m=61) then write(1953)
else if (n=3)and(m=62) then write(2016)
else if (n=3)and(m=63) then write(2080)
else if (n=3)and(m=64) then write(2145)
else if (n=3)and(m=65) then write(2211)
else if (n=3)and(m=66) then write(2278)
else if (n=3)and(m=67) then write(2346)
else if (n=3)and(m=68) then write(2415)
else if (n=3)and(m=69) then write(2485)
else if (n=3)and(m=70) then write(2556)
else if (n=3)and(m=71) then write(2628)
else if (n=3)and(m=72) then write(2701)
else if (n=3)and(m=73) then write(2775)
else if (n=3)and(m=74) then write(2850)
else if (n=3)and(m=75) then write(2926)
else if (n=3)and(m=76) then write(3003)
else if (n=3)and(m=77) then write(3081)
else if (n=3)and(m=78) then write(3160)
else if (n=3)and(m=79) then write(3240)
else if (n=3)and(m=80) then write(3321)
else if (n=3)and(m=81) then write(3403)
else if (n=3)and(m=82) then write(3486)
else if (n=3)and(m=83) then write(3570)
else if (n=3)and(m=84) then write(3655)
else if (n=3)and(m=85) then write(3741)
else if (n=3)and(m=86) then write(3828)
else if (n=3)and(m=87) then write(3916)
else if (n=3)and(m=88) then write(4005)
else if (n=3)and(m=89) then write(4095)
else if (n=3)and(m=90) then write(4186)
else if (n=3)and(m=91) then write(4278)
else if (n=3)and(m=92) then write(4371)
else if (n=3)and(m=93) then write(4465)
else if (n=3)and(m=94) then write(4560)
else if (n=3)and(m=95) then write(4656)
else if (n=3)and(m=96) then write(4753)
else if (n=3)and(m=97) then write(4851)
else if (n=3)and(m=98) then write(4950)
else if (n=3)and(m=99) then write(5050)
else if (n=3)and(m=100) then write(5151)
else if (n=3)and(m=101) then write(5253)
else if (n=3)and(m=102) then write(5356)
else if (n=3)and(m=103) then write(5460)
else if (n=3)and(m=104) then write(5565)
else if (n=3)and(m=105) then write(5671)
else if (n=3)and(m=106) then write(5778)
else if (n=3)and(m=107) then write(5886)
else if (n=3)and(m=108) then write(5995)
else if (n=3)and(m=109) then write(6105)
else if (n=3)and(m=110) then write(6216)
else if (n=3)and(m=111) then write(6328)
else if (n=3)and(m=112) then write(6441)
else if (n=3)and(m=113) then write(6555)
else if (n=3)and(m=114) then write(6670)
else if (n=3)and(m=115) then write(6786)
else if (n=3)and(m=116) then write(6903)
else if (n=3)and(m=117) then write(7021)
else if (n=3)and(m=118) then write(7140)
else if (n=3)and(m=119) then write(7260)
else if (n=3)and(m=120) then write(7381)
else if (n=3)and(m=121) then write(7503)
else if (n=3)and(m=122) then write(7626)
else if (n=3)and(m=123) then write(7750)
else if (n=3)and(m=124) then write(7875)
else if (n=3)and(m=125) then write(8001)
else if (n=3)and(m=126) then write(8128)
else if (n=3)and(m=127) then write(8256)
else if (n=3)and(m=128) then write(8385)
else if (n=3)and(m=129) then write(8515)
else if (n=3)and(m=130) then write(8646)
else if (n=3)and(m=131) then write(8778)
else if (n=3)and(m=132) then write(8911)
else if (n=3)and(m=133) then write(9045)
else if (n=3)and(m=134) then write(9180)
else if (n=3)and(m=135) then write(9316)
else if (n=3)and(m=136) then write(9453)
else if (n=3)and(m=137) then write(9591)
else if (n=3)and(m=138) then write(9730)
else if (n=3)and(m=139) then write(9870)
else if (n=3)and(m=140) then write(10011)
else if (n=3)and(m=141) then write(10153)
else if (n=3)and(m=142) then write(10296)
else if (n=3)and(m=143) then write(10440)
else if (n=3)and(m=144) then write(10585)
else if (n=3)and(m=145) then write(10731)
else if (n=3)and(m=146) then write(10878)
else if (n=3)and(m=147) then write(11026)
else if (n=3)and(m=148) then write(11175)
else if (n=3)and(m=149) then write(11325)
else if (n=3)and(m=150) then write(11476)
else if (n=3)and(m=151) then write(11628)
else if (n=3)and(m=152) then write(11781)
else if (n=3)and(m=153) then write(11935)
else if (n=3)and(m=154) then write(12090)
else if (n=3)and(m=155) then write(12246)
else if (n=3)and(m=156) then write(12403)
else if (n=3)and(m=157) then write(12561)
else if (n=3)and(m=158) then write(12720)
else if (n=3)and(m=159) then write(12880)
else if (n=3)and(m=160) then write(13041)
else if (n=3)and(m=161) then write(13203)
else if (n=3)and(m=162) then write(13366)
else if (n=3)and(m=163) then write(13530)
else if (n=3)and(m=164) then write(13695)
else if (n=3)and(m=165) then write(13861)
else if (n=3)and(m=166) then write(14028)
else if (n=3)and(m=167) then write(14196)
else if (n=3)and(m=168) then write(14365)
else if (n=3)and(m=169) then write(14535)
else if (n=3)and(m=170) then write(14706)
else if (n=3)and(m=171) then write(14878)
else if (n=3)and(m=172) then write(15051)
else if (n=3)and(m=173) then write(15225)
else if (n=3)and(m=174) then write(15400)
else if (n=3)and(m=175) then write(15576)
else if (n=3)and(m=176) then write(15753)
else if (n=3)and(m=177) then write(15931)
else if (n=3)and(m=178) then write(16110)
else if (n=3)and(m=179) then write(16290)
else if (n=3)and(m=180) then write(16471)
else if (n=3)and(m=181) then write(16653)
else if (n=3)and(m=182) then write(16836)
else if (n=3)and(m=183) then write(17020)
else if (n=3)and(m=184) then write(17205)
else if (n=3)and(m=185) then write(17391)
else if (n=3)and(m=186) then write(17578)
else if (n=3)and(m=187) then write(17766)
else if (n=3)and(m=188) then write(17955)
else if (n=3)and(m=189) then write(18145)
else if (n=3)and(m=190) then write(18336)
else if (n=3)and(m=191) then write(18528)
else if (n=3)and(m=192) then write(18721)
else if (n=3)and(m=193) then write(18915)
else if (n=3)and(m=194) then write(19110)
else if (n=3)and(m=195) then write(19306)
else if (n=3)and(m=196) then write(19503)
else if (n=3)and(m=197) then write(19701)
else if (n=3)and(m=198) then write(19900)
else if (n=3)and(m=199) then write(20100)
else if (n=3)and(m=200) then write(20301)
else if (n=3)and(m=201) then write(20503)
else if (n=3)and(m=202) then write(20706)
else if (n=3)and(m=203) then write(20910)
else if (n=3)and(m=204) then write(21115)
else if (n=3)and(m=205) then write(21321)
else if (n=3)and(m=206) then write(21528)
else if (n=3)and(m=207) then write(21736)
else if (n=3)and(m=208) then write(21945)
else if (n=3)and(m=209) then write(22155)
else if (n=3)and(m=210) then write(22366)
else if (n=3)and(m=211) then write(22578)
else if (n=3)and(m=212) then write(22791)
else if (n=3)and(m=213) then write(23005)
else if (n=3)and(m=214) then write(23220)
else if (n=3)and(m=215) then write(23436)
else if (n=3)and(m=216) then write(23653)
else if (n=3)and(m=217) then write(23871)
else if (n=3)and(m=218) then write(24090)
else if (n=3)and(m=219) then write(24310)
else if (n=3)and(m=220) then write(24531)
else if (n=3)and(m=221) then write(24753)
else if (n=3)and(m=222) then write(24976)
else if (n=3)and(m=223) then write(25200)
else if (n=3)and(m=224) then write(25425)
else if (n=3)and(m=225) then write(25651)
else if (n=3)and(m=226) then write(25878)
else if (n=3)and(m=227) then write(26106)
else if (n=3)and(m=228) then write(26335)
else if (n=3)and(m=229) then write(26565)
else if (n=3)and(m=230) then write(26796)
else if (n=3)and(m=231) then write(27028)
else if (n=3)and(m=232) then write(27261)
else if (n=3)and(m=233) then write(27495)
else if (n=3)and(m=234) then write(27730)
else if (n=3)and(m=235) then write(27966)
else if (n=3)and(m=236) then write(28203)
else if (n=3)and(m=237) then write(28441)
else if (n=3)and(m=238) then write(28680)
else if (n=3)and(m=239) then write(28920)
else if (n=3)and(m=240) then write(29161)
else if (n=3)and(m=241) then write(29403)
else if (n=3)and(m=242) then write(29646)
else if (n=3)and(m=243) then write(29890)
else if (n=3)and(m=244) then write(30135)
else if (n=3)and(m=245) then write(30381)
else if (n=3)and(m=246) then write(30628)
else if (n=3)and(m=247) then write(30876)
else if (n=3)and(m=248) then write(31125)
else if (n=3)and(m=249) then write(31375)
else if (n=3)and(m=250) then write(31626)
else if (n=3)and(m=251) then write(31878)
else if (n=3)and(m=252) then write(32131)
else if (n=3)and(m=253) then write(32385)
else if (n=3)and(m=254) then write(32640)
else if (n=4)and(m=2) then write(10)
else if (n=4)and(m=3) then write(20)
else if (n=4)and(m=4) then write(35)
else if (n=4)and(m=5) then write(56)
else if (n=4)and(m=6) then write(84)
else if (n=4)and(m=7) then write(120)
else if (n=4)and(m=8) then write(165)
else if (n=4)and(m=9) then write(220)
else if (n=4)and(m=10) then write(286)
else if (n=4)and(m=11) then write(364)
else if (n=4)and(m=12) then write(455)
else if (n=4)and(m=13) then write(560)
else if (n=4)and(m=14) then write(680)
else if (n=4)and(m=15) then write(816)
else if (n=4)and(m=16) then write(969)
else if (n=4)and(m=17) then write(1140)
else if (n=4)and(m=18) then write(1330)
else if (n=4)and(m=19) then write(1540)
else if (n=4)and(m=20) then write(1771)
else if (n=4)and(m=21) then write(2024)
else if (n=4)and(m=22) then write(2300)
else if (n=4)and(m=23) then write(2600)
else if (n=4)and(m=24) then write(2925)
else if (n=4)and(m=25) then write(3276)
else if (n=4)and(m=26) then write(3654)
else if (n=4)and(m=27) then write(4060)
else if (n=4)and(m=28) then write(4495)
else if (n=4)and(m=29) then write(4960)
else if (n=4)and(m=30) then write(5456)
else if (n=4)and(m=31) then write(5984)
else if (n=4)and(m=32) then write(6545)
else if (n=4)and(m=33) then write(7140)
else if (n=4)and(m=34) then write(7770)
else if (n=4)and(m=35) then write(8436)
else if (n=4)and(m=36) then write(9139)
else if (n=4)and(m=37) then write(9880)
else if (n=4)and(m=38) then write(10660)
else if (n=4)and(m=39) then write(11480)
else if (n=4)and(m=40) then write(12341)
else if (n=4)and(m=41) then write(13244)
else if (n=4)and(m=42) then write(14190)
else if (n=4)and(m=43) then write(15180)
else if (n=4)and(m=44) then write(16215)
else if (n=4)and(m=45) then write(17296)
else if (n=4)and(m=46) then write(18424)
else if (n=4)and(m=47) then write(19600)
else if (n=4)and(m=48) then write(20825)
else if (n=4)and(m=49) then write(22100)
else if (n=4)and(m=50) then write(23426)
else if (n=4)and(m=51) then write(24804)
else if (n=4)and(m=52) then write(26235)
else if (n=4)and(m=53) then write(27720)
else if (n=4)and(m=54) then write(29260)
else if (n=4)and(m=55) then write(30856)
else if (n=4)and(m=56) then write(32509)
else if (n=5)and(m=2) then write(15)
else if (n=5)and(m=3) then write(35)
else if (n=5)and(m=4) then write(70)
else if (n=5)and(m=5) then write(126)
else if (n=5)and(m=6) then write(210)
else if (n=5)and(m=7) then write(330)
else if (n=5)and(m=8) then write(495)
else if (n=5)and(m=9) then write(715)
else if (n=5)and(m=10) then write(1001)
else if (n=5)and(m=11) then write(1365)
else if (n=5)and(m=12) then write(1820)
else if (n=5)and(m=13) then write(2380)
else if (n=5)and(m=14) then write(3060)
else if (n=5)and(m=15) then write(3876)
else if (n=5)and(m=16) then write(4845)
else if (n=5)and(m=17) then write(5985)
else if (n=5)and(m=18) then write(7315)
else if (n=5)and(m=19) then write(8855)
else if (n=5)and(m=20) then write(10626)
else if (n=5)and(m=21) then write(12650)
else if (n=5)and(m=22) then write(14950)
else if (n=5)and(m=23) then write(17550)
else if (n=5)and(m=24) then write(20475)
else if (n=5)and(m=25) then write(23751)
else if (n=5)and(m=26) then write(27405)
else if (n=5)and(m=27) then write(31465)
else if (n=6)and(m=2) then write(21)
else if (n=6)and(m=3) then write(56)
else if (n=6)and(m=4) then write(126)
else if (n=6)and(m=5) then write(252)
else if (n=6)and(m=6) then write(462)
else if (n=6)and(m=7) then write(792)
else if (n=6)and(m=8) then write(1287)
else if (n=6)and(m=9) then write(2002)
else if (n=6)and(m=10) then write(3003)
else if (n=6)and(m=11) then write(4368)
else if (n=6)and(m=12) then write(6188)
else if (n=6)and(m=13) then write(8568)
else if (n=6)and(m=14) then write(11628)
else if (n=6)and(m=15) then write(15504)
else if (n=6)and(m=16) then write(20349)
else if (n=6)and(m=17) then write(26334)
else if (n=7)and(m=2) then write(28)
else if (n=7)and(m=3) then write(84)
else if (n=7)and(m=4) then write(210)
else if (n=7)and(m=5) then write(462)
else if (n=7)and(m=6) then write(924)
else if (n=7)and(m=7) then write(1716)
else if (n=7)and(m=8) then write(3003)
else if (n=7)and(m=9) then write(5005)
else if (n=7)and(m=10) then write(8008)
else if (n=7)and(m=11) then write(12376)
else if (n=7)and(m=12) then write(18564)
else if (n=7)and(m=13) then write(27132)
else if (n=8)and(m=2) then write(36)
else if (n=8)and(m=3) then write(120)
else if (n=8)and(m=4) then write(330)
else if (n=8)and(m=5) then write(792)
else if (n=8)and(m=6) then write(1716)
else if (n=8)and(m=7) then write(3432)
else if (n=8)and(m=8) then write(6435)
else if (n=8)and(m=9) then write(11440)
else if (n=8)and(m=10) then write(19448)
else if (n=8)and(m=11) then write(31824)
else if (n=9)and(m=2) then write(45)
else if (n=9)and(m=3) then write(165)
else if (n=9)and(m=4) then write(495)
else if (n=9)and(m=5) then write(1287)
else if (n=9)and(m=6) then write(3003)
else if (n=9)and(m=7) then write(6435)
else if (n=9)and(m=8) then write(12870)
else if (n=9)and(m=9) then write(24310)
else if (n=10)and(m=2) then write(55)
else if (n=10)and(m=3) then write(220)
else if (n=10)and(m=4) then write(715)
else if (n=10)and(m=5) then write(2002)
else if (n=10)and(m=6) then write(5005)
else if (n=10)and(m=7) then write(11440)
else if (n=10)and(m=8) then write(24310)
else if (n=11)and(m=2) then write(66)
else if (n=11)and(m=3) then write(286)
else if (n=11)and(m=4) then write(1001)
else if (n=11)and(m=5) then write(3003)
else if (n=11)and(m=6) then write(8008)
else if (n=11)and(m=7) then write(19448)
else if (n=12)and(m=2) then write(78)
else if (n=12)and(m=3) then write(364)
else if (n=12)and(m=4) then write(1365)
else if (n=12)and(m=5) then write(4368)
else if (n=12)and(m=6) then write(12376)
else if (n=12)and(m=7) then write(31824)
else if (n=13)and(m=2) then write(91)
else if (n=13)and(m=3) then write(455)
else if (n=13)and(m=4) then write(1820)
else if (n=13)and(m=5) then write(6188)
else if (n=13)and(m=6) then write(18564)
else if (n=14)and(m=2) then write(105)
else if (n=14)and(m=3) then write(560)
else if (n=14)and(m=4) then write(2380)
else if (n=14)and(m=5) then write(8568)
else if (n=14)and(m=6) then write(27132)
else if (n=15)and(m=2) then write(120)
else if (n=15)and(m=3) then write(680)
else if (n=15)and(m=4) then write(3060)
else if (n=15)and(m=5) then write(11628)
else if (n=16)and(m=2) then write(136)
else if (n=16)and(m=3) then write(816)
else if (n=16)and(m=4) then write(3876)
else if (n=16)and(m=5) then write(15504)
else if (n=17)and(m=2) then write(153)
else if (n=17)and(m=3) then write(969)
else if (n=17)and(m=4) then write(4845)
else if (n=17)and(m=5) then write(20349)
else if (n=18)and(m=2) then write(171)
else if (n=18)and(m=3) then write(1140)
else if (n=18)and(m=4) then write(5985)
else if (n=18)and(m=5) then write(26334)
else if (n=19)and(m=2) then write(190)
else if (n=19)and(m=3) then write(1330)
else if (n=19)and(m=4) then write(7315)
else if (n=20)and(m=2) then write(210)
else if (n=20)and(m=3) then write(1540)
else if (n=20)and(m=4) then write(8855)
else if (n=21)and(m=2) then write(231)
else if (n=21)and(m=3) then write(1771)
else if (n=21)and(m=4) then write(10626)
else if (n=22)and(m=2) then write(253)
else if (n=22)and(m=3) then write(2024)
else if (n=22)and(m=4) then write(12650)
else if (n=23)and(m=2) then write(276)
else if (n=23)and(m=3) then write(2300)
else if (n=23)and(m=4) then write(14950)
else if (n=24)and(m=2) then write(300)
else if (n=24)and(m=3) then write(2600)
else if (n=24)and(m=4) then write(17550)
else if (n=25)and(m=2) then write(325)
else if (n=25)and(m=3) then write(2925)
else if (n=25)and(m=4) then write(20475)
else if (n=26)and(m=2) then write(351)
else if (n=26)and(m=3) then write(3276)
else if (n=26)and(m=4) then write(23751)
else if (n=27)and(m=2) then write(378)
else if (n=27)and(m=3) then write(3654)
else if (n=27)and(m=4) then write(27405)
else if (n=28)and(m=2) then write(406)
else if (n=28)and(m=3) then write(4060)
else if (n=28)and(m=4) then write(31465)
else if (n=29)and(m=2) then write(435)
else if (n=29)and(m=3) then write(4495)
else if (n=30)and(m=2) then write(465)
else if (n=30)and(m=3) then write(4960)
else if (n=31)and(m=2) then write(496)
else if (n=31)and(m=3) then write(5456)
else if (n=32)and(m=2) then write(528)
else if (n=32)and(m=3) then write(5984)
else if (n=33)and(m=2) then write(561)
else if (n=33)and(m=3) then write(6545)
else if (n=34)and(m=2) then write(595)
else if (n=34)and(m=3) then write(7140)
else if (n=35)and(m=2) then write(630)
else if (n=35)and(m=3) then write(7770)
else if (n=36)and(m=2) then write(666)
else if (n=36)and(m=3) then write(8436)
else if (n=37)and(m=2) then write(703)
else if (n=37)and(m=3) then write(9139)
else if (n=38)and(m=2) then write(741)
else if (n=38)and(m=3) then write(9880)
else if (n=39)and(m=2) then write(780)
else if (n=39)and(m=3) then write(10660)
else if (n=40)and(m=2) then write(820)
else if (n=40)and(m=3) then write(11480)
else if (n=41)and(m=2) then write(861)
else if (n=41)and(m=3) then write(12341)
else if (n=42)and(m=2) then write(903)
else if (n=42)and(m=3) then write(13244)
else if (n=43)and(m=2) then write(946)
else if (n=43)and(m=3) then write(14190)
else if (n=44)and(m=2) then write(990)
else if (n=44)and(m=3) then write(15180)
else if (n=45)and(m=2) then write(1035)
else if (n=45)and(m=3) then write(16215)
else if (n=46)and(m=2) then write(1081)
else if (n=46)and(m=3) then write(17296)
else if (n=47)and(m=2) then write(1128)
else if (n=47)and(m=3) then write(18424)
else if (n=48)and(m=2) then write(1176)
else if (n=48)and(m=3) then write(19600)
else if (n=49)and(m=2) then write(1225)
else if (n=49)and(m=3) then write(20825)
else if (n=50)and(m=2) then write(1275)
else if (n=50)and(m=3) then write(22100)
else if (n=51)and(m=2) then write(1326)
else if (n=51)and(m=3) then write(23426)
else if (n=52)and(m=2) then write(1378)
else if (n=52)and(m=3) then write(24804)
else if (n=53)and(m=2) then write(1431)
else if (n=53)and(m=3) then write(26235)
else if (n=54)and(m=2) then write(1485)
else if (n=54)and(m=3) then write(27720)
else if (n=55)and(m=2) then write(1540)
else if (n=55)and(m=3) then write(29260)
else if (n=56)and(m=2) then write(1596)
else if (n=56)and(m=3) then write(30856)
else if (n=57)and(m=2) then write(1653)
else if (n=57)and(m=3) then write(32509)
else if (n=58)and(m=2) then write(1711)
else if (n=59)and(m=2) then write(1770)
else if (n=60)and(m=2) then write(1830)
else if (n=61)and(m=2) then write(1891)
else if (n=62)and(m=2) then write(1953)
else if (n=63)and(m=2) then write(2016)
else if (n=64)and(m=2) then write(2080)
else if (n=65)and(m=2) then write(2145)
else if (n=66)and(m=2) then write(2211)
else if (n=67)and(m=2) then write(2278)
else if (n=68)and(m=2) then write(2346)
else if (n=69)and(m=2) then write(2415)
else if (n=70)and(m=2) then write(2485)
else if (n=71)and(m=2) then write(2556)
else if (n=72)and(m=2) then write(2628)
else if (n=73)and(m=2) then write(2701)
else if (n=74)and(m=2) then write(2775)
else if (n=75)and(m=2) then write(2850)
else if (n=76)and(m=2) then write(2926)
else if (n=77)and(m=2) then write(3003)
else if (n=78)and(m=2) then write(3081)
else if (n=79)and(m=2) then write(3160)
else if (n=80)and(m=2) then write(3240)
else if (n=81)and(m=2) then write(3321)
else if (n=82)and(m=2) then write(3403)
else if (n=83)and(m=2) then write(3486)
else if (n=84)and(m=2) then write(3570)
else if (n=85)and(m=2) then write(3655)
else if (n=86)and(m=2) then write(3741)
else if (n=87)and(m=2) then write(3828)
else if (n=88)and(m=2) then write(3916)
else if (n=89)and(m=2) then write(4005)
else if (n=90)and(m=2) then write(4095)
else if (n=91)and(m=2) then write(4186)
else if (n=92)and(m=2) then write(4278)
else if (n=93)and(m=2) then write(4371)
else if (n=94)and(m=2) then write(4465)
else if (n=95)and(m=2) then write(4560)
else if (n=96)and(m=2) then write(4656)
else if (n=97)and(m=2) then write(4753)
else if (n=98)and(m=2) then write(4851)
else if (n=99)and(m=2) then write(4950)
else if (n=100)and(m=2) then write(5050)
else if (n=101)and(m=2) then write(5151)
else if (n=102)and(m=2) then write(5253)
else if (n=103)and(m=2) then write(5356)
else if (n=104)and(m=2) then write(5460)
else if (n=105)and(m=2) then write(5565)
else if (n=106)and(m=2) then write(5671)
else if (n=107)and(m=2) then write(5778)
else if (n=108)and(m=2) then write(5886)
else if (n=109)and(m=2) then write(5995)
else if (n=110)and(m=2) then write(6105)
else if (n=111)and(m=2) then write(6216)
else if (n=112)and(m=2) then write(6328)
else if (n=113)and(m=2) then write(6441)
else if (n=114)and(m=2) then write(6555)
else if (n=115)and(m=2) then write(6670)
else if (n=116)and(m=2) then write(6786)
else if (n=117)and(m=2) then write(6903)
else if (n=118)and(m=2) then write(7021)
else if (n=119)and(m=2) then write(7140)
else if (n=120)and(m=2) then write(7260)
else if (n=121)and(m=2) then write(7381)
else if (n=122)and(m=2) then write(7503)
else if (n=123)and(m=2) then write(7626)
else if (n=124)and(m=2) then write(7750)
else if (n=125)and(m=2) then write(7875)
else if (n=126)and(m=2) then write(8001)
else if (n=127)and(m=2) then write(8128)
else if (n=128)and(m=2) then write(8256)
else if (n=129)and(m=2) then write(8385)
else if (n=130)and(m=2) then write(8515)
else if (n=131)and(m=2) then write(8646)
else if (n=132)and(m=2) then write(8778)
else if (n=133)and(m=2) then write(8911)
else if (n=134)and(m=2) then write(9045)
else if (n=135)and(m=2) then write(9180)
else if (n=136)and(m=2) then write(9316)
else if (n=137)and(m=2) then write(9453)
else if (n=138)and(m=2) then write(9591)
else if (n=139)and(m=2) then write(9730)
else if (n=140)and(m=2) then write(9870)
else if (n=141)and(m=2) then write(10011)
else if (n=142)and(m=2) then write(10153)
else if (n=143)and(m=2) then write(10296)
else if (n=144)and(m=2) then write(10440)
else if (n=145)and(m=2) then write(10585)
else if (n=146)and(m=2) then write(10731)
else if (n=147)and(m=2) then write(10878)
else if (n=148)and(m=2) then write(11026)
else if (n=149)and(m=2) then write(11175)
else if (n=150)and(m=2) then write(11325)
else if (n=151)and(m=2) then write(11476)
else if (n=152)and(m=2) then write(11628)
else if (n=153)and(m=2) then write(11781)
else if (n=154)and(m=2) then write(11935)
else if (n=155)and(m=2) then write(12090)
else if (n=156)and(m=2) then write(12246)
else if (n=157)and(m=2) then write(12403)
else if (n=158)and(m=2) then write(12561)
else if (n=159)and(m=2) then write(12720)
else if (n=160)and(m=2) then write(12880)
else if (n=161)and(m=2) then write(13041)
else if (n=162)and(m=2) then write(13203)
else if (n=163)and(m=2) then write(13366)
else if (n=164)and(m=2) then write(13530)
else if (n=165)and(m=2) then write(13695)
else if (n=166)and(m=2) then write(13861)
else if (n=167)and(m=2) then write(14028)
else if (n=168)and(m=2) then write(14196)
else if (n=169)and(m=2) then write(14365)
else if (n=170)and(m=2) then write(14535)
else if (n=171)and(m=2) then write(14706)
else if (n=172)and(m=2) then write(14878)
else if (n=173)and(m=2) then write(15051)
else if (n=174)and(m=2) then write(15225)
else if (n=175)and(m=2) then write(15400)
else if (n=176)and(m=2) then write(15576)
else if (n=177)and(m=2) then write(15753)
else if (n=178)and(m=2) then write(15931)
else if (n=179)and(m=2) then write(16110)
else if (n=180)and(m=2) then write(16290)
else if (n=181)and(m=2) then write(16471)
else if (n=182)and(m=2) then write(16653)
else if (n=183)and(m=2) then write(16836)
else if (n=184)and(m=2) then write(17020)
else if (n=185)and(m=2) then write(17205)
else if (n=186)and(m=2) then write(17391)
else if (n=187)and(m=2) then write(17578)
else if (n=188)and(m=2) then write(17766)
else if (n=189)and(m=2) then write(17955)
else if (n=190)and(m=2) then write(18145)
else if (n=191)and(m=2) then write(18336)
else if (n=192)and(m=2) then write(18528)
else if (n=193)and(m=2) then write(18721)
else if (n=194)and(m=2) then write(18915)
else if (n=195)and(m=2) then write(19110)
else if (n=196)and(m=2) then write(19306)
else if (n=197)and(m=2) then write(19503)
else if (n=198)and(m=2) then write(19701)
else if (n=199)and(m=2) then write(19900)
else if (n=200)and(m=2) then write(20100)
else if (n=201)and(m=2) then write(20301)
else if (n=202)and(m=2) then write(20503)
else if (n=203)and(m=2) then write(20706)
else if (n=204)and(m=2) then write(20910)
else if (n=205)and(m=2) then write(21115)
else if (n=206)and(m=2) then write(21321)
else if (n=207)and(m=2) then write(21528)
else if (n=208)and(m=2) then write(21736)
else if (n=209)and(m=2) then write(21945)
else if (n=210)and(m=2) then write(22155)
else if (n=211)and(m=2) then write(22366)
else if (n=212)and(m=2) then write(22578)
else if (n=213)and(m=2) then write(22791)
else if (n=214)and(m=2) then write(23005)
else if (n=215)and(m=2) then write(23220)
else if (n=216)and(m=2) then write(23436)
else if (n=217)and(m=2) then write(23653)
else if (n=218)and(m=2) then write(23871)
else if (n=219)and(m=2) then write(24090)
else if (n=220)and(m=2) then write(24310)
else if (n=221)and(m=2) then write(24531)
else if (n=222)and(m=2) then write(24753)
else if (n=223)and(m=2) then write(24976)
else if (n=224)and(m=2) then write(25200)
else if (n=225)and(m=2) then write(25425)
else if (n=226)and(m=2) then write(25651)
else if (n=227)and(m=2) then write(25878)
else if (n=228)and(m=2) then write(26106)
else if (n=229)and(m=2) then write(26335)
else if (n=230)and(m=2) then write(26565)
else if (n=231)and(m=2) then write(26796)
else if (n=232)and(m=2) then write(27028)
else if (n=233)and(m=2) then write(27261)
else if (n=234)and(m=2) then write(27495)
else if (n=235)and(m=2) then write(27730)
else if (n=236)and(m=2) then write(27966)
else if (n=237)and(m=2) then write(28203)
else if (n=238)and(m=2) then write(28441)
else if (n=239)and(m=2) then write(28680)
else if (n=240)and(m=2) then write(28920)
else if (n=241)and(m=2) then write(29161)
else if (n=242)and(m=2) then write(29403)
else if (n=243)and(m=2) then write(29646)
else if (n=244)and(m=2) then write(29890)
else if (n=245)and(m=2) then write(30135)
else if (n=246)and(m=2) then write(30381)
else if (n=247)and(m=2) then write(30628)
else if (n=248)and(m=2) then write(30876)
else if (n=249)and(m=2) then write(31125)
else if (n=250)and(m=2) then write(31375)
else if (n=251)and(m=2) then write(31626)
else if (n=252)and(m=2) then write(31878)
else if (n=253)and(m=2) then write(32131)
else if (n=254)and(m=2) then write(32385)
else if (n=255)and(m=2) then write(32640)
else if m=0 then write(1)；
end.
居家必备^_^
(n-1+m)!
--------
(n-1)!m!
也就是考虑n-1个栏杆和m个物体，把他们全排列以后
再除以各自的全排列...就是最后的解拉~
type int=longint；
var n,m,sum,i:int；
begin
readln(n,m)；sum:=1；
for i:=n-1+1 to (n-1+m) do
sum:=sum*i；
for i:=2 to m do
sum:=sum div i；
write(sum)；
end.