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heyuntian1022 2008-03-05 20:29:00
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PROGRAM P1291;

VAR

LA,LB,I,C,ANS:INTEGER;

A:ARRAY [1..2000] OF INTEGER;

B:ARRAY [0..300] OF INTEGER;

BEGIN

READLN(LA,LB);

FILLCHAR(B,SIZEOF(B),0);

B[0]:=MAXINT;

FOR I:=1 TO LA DO READLN(A[I]);

FOR I:=1 TO LB DO

BEGIN

READLN(C);

IF C<>0 THEN INC(B[C]);

END;

ANS:=LB;

FOR I:=1 TO LA DO

BEGIN

C:=A[I]-1;

WHILE B[C]=0 DO DEC(C);

IF C>0 THEN

BEGIN

DEC(B[C]);

DEC(ANS);

END;

ENd;

writeln(ans);

end.

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