Cod sursa(job #9022)
| Utilizator |  Valy Mihai vali_mi |
Data | 26 ianuarie 2007 13:16:56 |
|---|---|---|---|
| Problema | Factorial | Scor | 45 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.35 kb |
#include<stdio.h>
FILE *f1,*f2;
int main()
{long unsigned x,y,p,nrp,nrad;
f1=fopen("fact.in","r");
fscanf(f1,"%lu",&p);
fclose(f1);
nrad=0;nrp=p;
while (nrp>=4){
nrad++;nrp--;
if(nrad%5==0){nrp--;
x=nrad/5;
while(x%5==0)
{x=x/5;nrp--; }
}
}
nrad=nrad+nrp;
x=nrad*5;
f2=fopen("fact.out","w");
fprintf(f2,"%lu",x);
fclose(f2);
return 0;
}