#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

int main()
{
    int tests, digit, sumof, sumofdigits;

    cin >> tests;
    while (tests >= 0 && tests <= 100)
    {
        return 0;
    }

    for (int i = 0; i < tests; i++)
    {
        cin >> digit;
        for (int k = 0; k < digit; k++)
        {
            sumof = 2 * digit;
        }
        string sum = itos(sumof);

        cout << sum;

    }

    return 0;
}