Cod sursa(job #562784)
| Utilizator |  Pasalau Andrei andreipasalau |
Data | 23 martie 2011 21:39:30 |
|---|---|---|---|
| Problema | Factorial | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.18 kb |
#include<fstream.h>
#include<math.h>
ifstream f("fact.in");
ofstream g("fact.out");
main()
{
int i,p,n;
f>>p;
n=(-1+sqrt(1+8*p))/2;
if(n<0) g<<"-1";
g<<pow(5,n);
}