Pagini recente » Cod sursa (job #3360951) | Cod sursa (job #3359523) | Cod sursa (job #3360949) | Cod sursa (job #3360934) | Cod sursa (job #3360937)
#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;
}