Cod sursa(job #1842575)
Utilizator | Alex S Hill shantih1 | Data | 7 ianuarie 2017 11:29:01 |
---|---|---|---|
Problema | Factorial | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.52 kb |
#include <iostream>
#include <cmath>
#include <fstream>
using namespace std;
ifstream fin("fact.in");
ofstream fout("fact.out");
int n, i;
long long x=1, nf, p;
int main() {
fin >> p;
for (i = 1; i <= p; i++)
x *= 10;
nf = 1;
n = 1;
if ( p > 0 )
{
while ( nf % x != 0 )
{
nf = nf * n;
nf = nf % x;
n = n + 1;
}
fout << n - 1 << "\n";
}
else fout << 1 << "\n";
return 0;
}