Cod sursa(job #1838775)

Utilizator AnaAna123456789Ana Ana AnaAna123456789 Data 1 ianuarie 2017 19:17:03
Problema Fractii Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.3 kb
Raporteaza aceasta sursa 
# include<fstream>
# include<bits/stdc++.h>
using namespace std;
ifstream fin("fractii.in");
ofstream fout("fractii.out");
int N,m,a[1000001];
int main()
{
	fin>>N;
	m=N*(N-1)+1;
    for (int i=2 ; i<=N;i++)
	for (int j = i*2; j <= N; j +=i)
            m-=i;
    fout<<m;
	return 0;	
}