6
5 1
1 3000
1 2000
1 1000
1 2000
1 1000
5 2
1 3000
1 2000
1 1000
1 2000
1 1000
2 10
10 1
10 2
5 2
2 50
1 40
1 50
1 60
3 50
4 2993
3000 999999999
2995 1000000000
1552 888888888
1336 999999999
3 1
1 10
2 9
1 11