这种方法能过吗？

卷王 @ 2022-11-01 20:15:28

#include<bits/stdc++.h>
using namespace std;
int n, k;
int a[20];
int main()
{
    cin >> n >> k;
    for(int i = 1; i <= n; i++) a[i] = i;
    do
    {

        for(int i = 1; i <= k; i++) cout << a[i] << " ";
        cout << endl;
    } while(next_permutation(a + 1, a + n + 1));
    return 0;
}

by 卷王 @ 2022-11-01 20:17:17

https://www.luogu.com.cn/record/92483718

by wheneveright @ 2022-11-01 20:27:36

input :

4 2

然后你就寄了

by 卷王 @ 2022-11-01 20:29:33

@wheneveright addd

by 卷王 @ 2022-11-01 20:30:13

@wheneveright 我问的就是怎样能过这样的样例

by WhtshpBlkhse @ 2022-11-17 10:40:00

再加句reverse，就可以过了。

#include <stdio.h>
#include <algorithm>
using namespace std;

int q[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, c;

int main()
{
    int n, i, k;

    scanf("%d%d", &n, &k);
    do{
        printf("%d", q[0]);
        for(i = 1; i < k; i++) printf(" %d", q[i]);
        puts("");
        reverse(q + k, q + n);
    }while(next_permutation(q, q + n));

    return 0;
}

我的AC代码 @holdyhao_Genius

by 流光萤影 @ 2023-07-18 15:24:10

@岚羊央 为什么加上reverse()就能过a？