Cod sursa(job #1656129)
Utilizator | Data | 18 martie 2016 19:36:32 | |
---|---|---|---|
Problema | Factorial | Scor | 50 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.46 kb |
#include <iostream>
#include<fstream>
using namespace std;
ifstream f("fact.in");
ofstream g("fact.out");
long n,cn,p,p5;
int main()
{f>>p;
if (p==0)
g<<1;
else{n=0;
while(p5<p)
{
n=n+5;
cn=n;
while(cn%5==0)
{
p5++;
cn=cn/5;
}
}
if(p5>p)
g<<-1;
else g<<n;
}
return 0;
}