Cod sursa(job #1115551)

Utilizator AlbinaFlaviu1Albina Flaviu Mihai AlbinaFlaviu1 Data 21 februarie 2014 21:41:32
Problema Factorial Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.3 kb
Raporteaza aceasta sursa 
#include<fstream>
using namespace std;
long long p,n,x,m=5,k;
int main()
{
    ifstream fin("fact.in");
    ofstream fout("fact.out");
    fin>>p;
    if(!p){fout<<1;return 0;}
    do
    {
        n+=5;
        if(n==m)k++,m=m*5;
        x+=k;

    }while(x!=p);
    fout<<n;
    return 0;
}