Cod sursa(job #1930578)
| Utilizator |  Nu Un Tip Suspect nuuntipsuspect |
Data | 19 martie 2017 01:37:32 |
|---|---|---|---|
| Problema | Factorial | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.22 kb |
#include <fstream>
using namespace std;
ifstream f("fact.in");
ofstream g("fact.out");
long p,m,s,n;
int main(){f>>p;
for(n=4*p;s<p;n++) for(m=n,s=0;m!=0;m/=5,s+=m);
if(s!=p) g<<-1;
else if(p==0) g<<1;
else g<<n-1;
}