Cod sursa(job #19898)
| Utilizator |  Bivol Mihai mihai0110 |
Data | 20 februarie 2007 10:58:54 |
|---|---|---|---|
| Problema | Factorial | Scor | 50 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.29 kb |
#include<fstream.h>
ifstream f("fact.in");
ofstream g("fact.out");
int p,nr5,n,x;
int main()
{
f>>p;
n=5;
nr5=1;
while(nr5<p)
{
n=n+5;
x=n;
while(x%5==0)
{
nr5++;
x=x/5;
}
}
if(p==0)
g<<"1";
else
if(nr5==p)
g<<n;
else
g<<"-1";
g<<'\n';
f.close();
g.close();
return 0;
}
