cp/codeforces/1037/io/2126d.1.cpin

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79 B
Text

5
3 1
2 3 3
1 2 2
3 10 10
1 0
1 2 2
1 2
1 2 2
2 2
1 3 2
2 4 4
2 5
1 10 5
3 6 5