5 10
1 2 10000 10000
1 3 10000 1000
1 4 10000 10000
1 5 10000 10000
2 3 1000 10000
2 4 10000 10000
2 5 10000 10000
3 4 1000 10000
3 5 10000 10000
4 5 10000 10000