#include<stdio.h>



int main()
{
    int n,p,i=0,m;
	FILE *pfile;
    
    printf("Introduceti nr de zerouri");
    freopen("fact.in","r",stdin);
    
    n=1;
	pfile = fopen("fact.out","w");
    
    while(p!=i)
    {
               n++;
               if(n%5==0)
                {
                         m=n; 
                         while(m%5==0) 
                           {
                              i++;
                               m=m/5;
                            }
    }           }
      
      fputc(n,pfile);
	  fclose(pfile);
     
      }