Cod sursa(job #9024)
| Utilizator |  Valy Mihai vali_mi |
Data | 26 ianuarie 2007 13:36:34 |
|---|---|---|---|
| Problema | Factorial | Scor | 50 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.33 kb |
#include<stdio.h>
FILE *f1,*f2;
int main()
{long unsigned x,p,nrp,nrad;
f1=fopen("fact.in","r");
fscanf(f1,"%lu",&p);
fclose(f1);
nrad=0;nrp=p-p%5;
while (nrp>=5){
nrad+=5;nrp-=5;
x=nrad;
while(x%5==0)
{x=x/5;nrp--;}
}
nrad=nrad+p%5+nrp;
x=nrad*5;
f2=fopen("fact.out","w");
fprintf(f2,"%lu",x);
fclose(f2);
return 0;
}
