제출 #138893

6 4
6 5
1 2
2 1
5 6

SCCs found by prev+union algorithm:
{ 5 6 }
{ 4 }
{ 3 }
{ 1 2 }

4
1 2 -1
3 -1
4 -1
5 6 -1

3 6
3 1
3 2
1 3
2 3
1 2
2 1

SCCs found by prev+union algorithm:
{ 1 2 3 }

1
1 2 3 -1

6 4
1 6
2 6
4 6
1 4

SCCs found by prev+union algorithm:
{ 6 }
{ 5 }
{ 4 }
{ 3 }
{ 2 }
{ 1 }

6
1 -1
2 -1
3 -1
4 -1
5 -1
6 -1