5 4
0 1
0 2
0 3
0 4
5 4
0 1
0 2
1 3
1 4
5 4
0 1
0 2
1 3
2 4
5 6
0 1
0 2
0 3
1 3
2 3
2 4
5 7
0 1
0 2
0 3
0 4
1 2
1 3
1 4
5 6
0 1
0 2
0 4
1 2
1 3
1 4
5 5
0 1
0 2
0 4
1 3
2 4
5 6
0 1
0 2
0 3
0 4
1 3
2 4
5 8
0 1
0 2
0 3
0 4
1 3
2 3
2 4
3 4
5 5
0 1
0 2
1 2
2 3
2 4
5 5
0 1
0 2
1 2
1 3
2 4
5 10
0 1
0 2
0 3
0 4
1 2
1 3
1 4
2 3
2 4
3 4
5 7
0 1
0 2
0 3
1 2
1 3
2 3
3 4
5 9
0 1
0 2
0 3
0 4
1 2
1 3
1 4
2 3
2 4