Cod sursa(job #215685)
| Utilizator |  John Doe chri5ty |
Data | 20 octombrie 2008 14:18:01 |
|---|---|---|---|
| Problema | Factorial | Scor | 20 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.34 kb |
#include <stdio.h>
int main(){
unsigned long P,n=1,n0=0,multiplier=1;
FILE*f=fopen("fact.in","r");fscanf(f,"%ld",&P);
fclose(f);f=fopen("fact.out","w");
while(n0<P){
multiplier++;
n*=multiplier;
while(n%10==0){
n/=10;
n0++;
}
n%=10;
}
if(n0>P)multiplier=-1;
fprintf(f,"%ld",multiplier);
fclose(f);
return 0;
}