Cod sursa(job #1253418)

Utilizator calinbrita23Calin Brita calinbrita23 Data 1 noiembrie 2014 11:49:39
Problema Factorial Scor 5
Compilator c Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include <stdio.h>
#include <stdlib.h>

int main() {

    FILE *fin,*fout;
    fin=fopen("fact.in","r");
    fout=fopen("fact.out","w");

    int p,n,cnt=0,ok=1,i;
    fscanf(fin,"%d",&p);

    n=p*5;

    for(i=25;i<n;i=i*5){
        cnt=cnt+ok;
        ok++;
    }

    n=n-(5*cnt);

    fprintf(fout,"%d",n);

    return 0;
}