#2988. 【入门】路径查找

【入门】路径查找

image

输入:

5 7
1 2
1 3
2 3
3 4
2 5
4 5
3 5

输出:

1 2 3 4 5
1 2 3 5
1 2 5
1 3 2 5
1 3 4 5
1 3 5