Cod sursa(job #3360937)

Utilizator cristiz123456Zoescu Cristian cristiz123456 Data 17 iulie 2026 16:24:46
Problema Sum Scor 50
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.53 kb

#include <fstream>
using namespace std;
ifstream cin("sum.in");
ofstream cout("sum.out");

int gcd(int a, int b)
{
    int r;
    while(b > 0)
    {
        r = a % b;
        a = b;
        b = r;
    }
    return a;
}
int main()
{
    int i, n, x, j;
    long long sum;
    cin >> n;
    for(i = 0; i < n; i++)
    {
        cin >> x;
        sum = 0;
        for(j = 0; j <= 2 * x; j++)
        {
            if(gcd(x, j) == 1)
            {
                sum += j;
            }
        }
        cout << sum << "\n";
    }
    return 0;
}