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1997E2200· master4s512 MB⌨ stdin/stdout
#binary search#brute force#data structures#divide and conquer#implementation

Examples

Sample 1of 2
Input
4 16
2 1 2 1
1 1
2 1
3 1
4 1
1 2
2 2
3 2
4 2
1 3
2 3
3 3
4 3
1 4
2 4
3 4
4 4
Output
YES
NO
YES
NO
YES
YES
YES
NO
YES
YES
YES
NO
YES
YES
YES
YES
Sample 2of 2
Input
7 15
1 1 2 1 1 1 1
5 3
2 2
2 2
1 6
5 1
5 5
7 7
3 5
7 4
4 3
2 5
1 2
5 6
4 1
6 1
Output
NO
YES
YES
YES
NO
YES
YES
YES
NO
NO
YES
YES
YES
NO
NO
1997E.cpp
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Ln 11·137 BGNU C++20 (64)