#include <bits/stdc++.h>

using namespace std;
int a[] = {1, 4, 6, 5, 3, 2, 1};
int main() {
    next_permutation(a, a + 7);
    for (int i = 0; i < 7; i++)
        cout << a[i] << " ";
    // 答案：1 5 1 2 3 4 6
    return 0;
}