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Cod sursa(job #748550)
#include<iostream>
#include<fstream>
int v[500000];
using namespace std;
int fact(long long n)
{
int i,f=1;
for(i=1;i<=n;i++)
{
f=f*i;}
return f;
}
int main()
{
ifstream f("pascal.in");
ofstream g("pascal.out");
int i,d,r,a=0;
f>>r>>d;
for(i=1;i<=r+1;i++)
{
v[i]=fact(r)/(fact(r-i)*fact(i));
if(r==i) a--;
if(v[i]%d==0) a++;
}
g<<a;
return 0;
}