Cod sursa(job #1592252)
Utilizator | Data | 7 februarie 2016 13:06:50 | |
---|---|---|---|
Problema | Factorial | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.31 kb |
#include <fstream>
using namespace std;
ifstream fin("fact.in");
ofstream fout("fact.out");
int n;
int fact(int x)
{
int r=0;
while (x>=5) {
r++;
x/=5;
}
return r;
}
int main()
{
int s=0;
fin>>x;
for (int i=5;<=n;i+=5) s+=fact(i);
fout<<s;
}