Cod sursa(job #2630103)

Utilizator alex_benescuAlex Ben alex_benescu Data 24 iunie 2020 11:35:35
Problema Factorial Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.27 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream f("fact.in");
ofstream g("fact.out");
long long p, m, s, n;
int main(){
  f>>p;
  for(n=4*p; s<p; n++)
    for(m=n, s=0; m!=0; m/=5, s+=m);
  if(s!=p)
    g<<-1;
  else if(p==0)
    g<<1;
  else
    g<<n-1;
}