Cod sursa(job #644627)
| Utilizator |  Tutuianu George geobarosanu1 |
Data | 7 decembrie 2011 10:09:24 |
|---|---|---|---|
| Problema | Factorial | Scor | 5 |
| Compilator | c | Status | done |
| Runda | Arhiva de probleme | Marime | 0.33 kb |
#include <stdio.h>
int main()
{
FILE* f=fopen("fact.in","r");
FILE* g=fopen("fact.out","w");
int n,i,ver,sol,cont;
fscanf(f,"%d", &n);
fclose(f);
sol=n*5;
cont=n;
for (i=25;i<sol;i+=25){
ver=25;
do {
cont--;
ver*=5;
}while (i%ver==0);
}
fprintf(g,"%d", n*5-(n-cont)*5);
fclose(g);
return 0;
}