Cod sursa(job #898288)
| Utilizator |  Demenescu Andrei Deme147 |
Data | 28 februarie 2013 09:46:00 |
|---|---|---|---|
| Problema | Factorial | Scor | 50 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.32 kb |
#include <fstream>
using namespace std;
int main()
{
long P,k,N,t;
ifstream f("fact.in");
ofstream g("fact.out");
f>>P;
k=0;N=5;
while(k<P)
{
t=N;
while(t%5==0)
{
t=t/5;
k=k+1;
}
N=N+5;
}
if(P==0) g<<"1";
else
if(k==P) g<<N-5;
else g<<"-1";
g<<endl;
f.close();
g.close();
}
