看到题目要求x大，k小，我一开始想到的就是两个循环

 while () { 
x--; 
} k++; 
}

但是测试点全部超时，并且有几个wa；想不到原因。
附上错误的代码：
```cpp
#include <iostream>
using namespace std;
int main() {
    int n;
    cin >> n;
    int x = 100, k = 1;
    int s = 0;
    int limit = 0;
    int bestx = 1, bestk = n;
    while (s != n) {
    while (s != n) {
        for (int i = 1; i <= 52; i++) {
            for (int d = 1; d <= 7; d++) {
                s += x + (d - 1) * k;
                if (s == n) {
                    limit = 1;
                    break;
                }
            }
            if (limit == 1) {
                break;
            }
        }
        if (limit == 1 && x > bestx) {
            bestx = x;
            bestk = k;
        }
        x--;
    }
        k++;
    }
    cout << bestx << endl;
    cout << bestk << endl;
    return 0;
}