Cod sursa(job #1781317)

Utilizator andreiutu111Noroc Andrei Mihail andreiutu111 Data 16 octombrie 2016 20:00:01
Problema Factorial Scor 15
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include <fstream>

using namespace std;
ifstream f("fact.in");
ofstream g("fact.out");

int main(){
  long long int N;
  long long d=2,c=5;
  f>>N;
  d*=N,c*=N;
  long long int l=1;
  if(N==0)g<<1;
  else{
  while(d || c){
    long long x=l;
    while(!(x%2) && d)d-=2,x/=2;
    while(!(x%5) && c)c-=5,x/=5;
    l++;
  }
  g<<l-1;
  }
}