char ch;
    cin >> ch;

    // 上半部分（含中间行）
    for (int i = 1; i <= 3; i++) {
        for (int j = 1; j <= 3 - i; j++) cout << " ";      // 打印空格
        for (int j = 1; j <= 2 * i - 1; j++) cout << ch;   // 打印字符
        cout << endl;
    }

    // 下半部分
    for (int i = 2; i >= 1; i--) {
        for (int j = 1; j <= 3 - i; j++) cout << " ";
        for (int j = 1; j <= 2 * i - 1; j++) cout << ch;
        cout << endl;
    }