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Cod sursa(job #15997)
type kisebb=longint;
nagyobb=longint;
Var
n,k,db:kisebb;
m:nagyobb;
be,ki:text;
Function C(n:kisebb;k:kisebb):nagyobb;
Var
x,y:nagyobb;
i:kisebb;
Begin
if (k=0) or (k=n) then C:=1
else if k=1 then C:=n
else C:=C(n-1,k-1)+C(n-1,k);
End;
Begin
Assign(be,'chernel.in');
reset(be);
readln(be,n,m);
close(be);
Assign(ki,'chernel.out');
rewrite(ki);
db:=0;
If m=1 then writeln(ki,n+1)
else if (n<>0) or (n<>1) then
if n mod 2=0 then begin
for k:=1 to trunc(n div 2)-1 do
if C(n,k) mod m=0 then db:=db+1;
db:=db*2;
if C(n,trunc(n div 2)) mod m=0 then db:=db+1;
end
else begin
for k:=1 to trunc(n div 2) do
if Abs(C(n,k)) mod m=0 then db:=db+1;
db:=db*2;
end;
writeln(ki,db);
close(ki);
End.