Cod sursa(job #1198551)

Utilizator teodor440Teodor Tonghioiu teodor440 Data 16 iunie 2014 09:55:34
Problema Factorial Scor 15
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.33 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
 
using namespace std;
 
ifstream f("fact.in");
ofstream g("fact.out");
 
int main()
{
    long long p,x=0;
    f>>p;
    while(p>0){
        if(x%5==0&&x){
            p-=x/5+1;
        }
        else p--;
        x++;
    }
    if(!p) g<<x*5;
    else g<<-1;
 
    return 0;
}