Cod sursa(job #1295588)

Utilizator CartofJohnsonFMI Tanasescu Andrei CartofJohnson Data 19 decembrie 2014 20:08:38
Problema Fractii Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <cmath>
#include <fstream>
using namespace std;

int main()
{
    unsigned long long n,nr=0;
    ifstream fin("fractii.in");
    fin>>n;
    ofstream fout("fractii.out");
	nr=n*n;
    for(unsigned long long a=2;a<=n;a++)
    {
        nr-=n/a;
    }
    fout<<nr;
    cout<<nr;
}