Main.js

var buf = '';

process.stdin.on('readable', function () {
    var chunk = process.stdin.read();
    if (chunk) buf += chunk.toString();
});

let getInputArgs = line => {
    return line
        .split(' ')
        .filter(s => s !== '')
        .map(x => parseInt(x));
};

function mergeSort(nums, left, right) {
    if (left >= right) {
        return;
    }

    const mid = (left + right) >> 1;
    mergeSort(nums, left, mid);
    mergeSort(nums, mid + 1, right);
    let i = left;
    let j = mid + 1;
    let tmp = [];
    while (i <= mid && j <= right) {
        if (nums[i] <= nums[j]) {
            tmp.push(nums[i++]);
        } else {
            tmp.push(nums[j++]);
        }
    }
    while (i <= mid) {
        tmp.push(nums[i++]);
    }
    while (j <= right) {
        tmp.push(nums[j++]);
    }
    for (i = left, j = 0; i <= right; ++i, ++j) {
        nums[i] = tmp[j];
    }
}

process.stdin.on('end', function () {
    buf.split('\n').forEach(function (line, lineIdx) {
        if (lineIdx % 2 === 1) {
            nums = getInputArgs(line);
            mergeSort(nums, 0, nums.length - 1);
            console.log(nums.join(' '));
        }
    });
});