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Good Graph

CF
1555F2700· international gm2s256 MB⌨ stdin/stdout
#data structures#dsu#graphs#trees

Examples

Sample 1of 1
Input
9 12
6 1 0
1 3 1
3 6 0
6 2 0
6 4 1
3 4 1
2 4 0
2 5 0
4 5 0
7 8 1
8 9 1
9 7 0
Output
YES
YES
YES
YES
YES
NO
YES
YES
NO
YES
YES
NO
1555F.cpp
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Ln 11·137 BGNU C++20 (64)
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