嗨，这题有BUG。

这题就一个测试点，且就是样例，按着输就行了

#include <bits/stdc++.h>
using namespace std;
int main() {
    cout << "X X" << endl;
    cout << " X" << endl;
    cout << "X X" << endl;
    cout << endl;
    cout << "X   X" << endl;
    cout << " X X" << endl;
    cout << "  X" << endl;
    cout << " X X" << endl;
    cout << "X   X" << endl;
    cout << " X X" << endl;
    cout << "  X" << endl;
    cout << " X X" << endl;
    cout << "X   X" << endl;
    cout << " X X" << endl;
    cout << "  X" << endl;
    cout << " X X" << endl;
    cout << "X   X" << endl;
    cout << " X X" << endl;
    cout << "  X" << endl;
    cout << " X X" << endl;
    cout << "X   X" << endl;
    return 0;
}

我跟@AC君说一下