Cod sursa(job #1429134)

Utilizator Moise_AndreiMoise Andrei Moise_Andrei Data 5 mai 2015 19:05:22
Problema Fractii Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.2 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
using namespace std;
ifstream in("fractii.in");
ofstream out("fractii.out");
int main()
{
    int n;
    in>>n;
    out<<n*(n+1)/2+1;
    return 0;
}