Cod sursa(job #1526044)

Utilizator teodor440Teodor Tonghioiu teodor440 Data 15 noiembrie 2015 21:06:42
Problema Fractii Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.33 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>

using namespace std;

ifstream f("fractii.in");
ofstream g("fractii.out");

int main()
{
	int n, i;
	long long answer, sum = 0;
	f >> n;
	answer = n * n - 1;
	for (i = 2; i <= n; i++) {
		sum += n / i;
	}
	answer -= sum;
	g << answer;

	f.close();
	g.close();
    return 0;
}