Cod sursa(job #785266)
| Utilizator |  Tudor Enescu ASTELO |
Data | 8 septembrie 2012 11:40:54 |
|---|---|---|---|
| Problema | Factorial | Scor | 25 |
| Compilator | c | Status | done |
| Runda | Arhiva de probleme | Marime | 0.35 kb |
#include<stdio.h>
int main ()
{
freopen("fact.in","r",stdin);
freopen("fact.out","w",stdout);
long long p,i,ci;
scanf("%I64d",&p);
if(p!=0)
for(i=5;i<=2000000000000;i+=5)
{ci=i;
while(ci%5==0)
{p--;
ci/=5;
}
if(p==0)
{printf("%I64d",i);
break;
}
if(p<0)
{printf("-1");
break;
}
}
else
printf("1");
return 0;
}