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CF
1508B
1800
· expert
2s
256 MB
⌨ stdin/stdout
#binary search
#combinatorics
#constructive algorithms
#implementation
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Examples
Sample 1
of 1
Input
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5
1 1
1 2
3 3
6 5
3 4
Output
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1
-1
2 1 3
1 2 4 3 5 6
3 2 1
58%
1508B.cpp
GNU C++20 (64)
GNU C11
Python 3
PyPy 3
Java 21
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GNU C++20 (64)
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