Nu aveti permisiuni pentru a descarca fisierul grader_test20.in
Cod sursa(job #157726)
| Utilizator |  Lala Marius Ionut Ionutz_Lala |
Data | 13 martie 2008 11:12:23 |
|---|---|---|---|
| Problema | Factorial | Scor | 60 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.31 kb |
#include<stdio.h>
FILE *f=fopen("fact.in","r"),*g=fopen("fact.out","w");
int main()
{
long int n,n5=0,i,nr;
fscanf(f,"%ld",&n);
if(n==0) {fprintf(g,"1");return 0;}
for(i=5;n5<n;i+=5)
{
nr=i;
while(!(nr%5)) {nr/=5;n5++;}
}
if(n5==n) fprintf(g,"%ld",i-5);
else fprintf(g,"-1");
return 0;
}