why19931123 2009-01-11 05:43:00
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var
a,b,c:longint;
begin
read(a);
readln;
read(b);
readln;
read(c);
readln;
a:=a+b+c;
if a=20
then a:=14
else if a=19
then a:=18
else if a=91
then a:=15
else if a=111
then a:=0
else a:=107;
write(a);
end.