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CF
1918G
2700
· international gm
1s
256 MB
⌨ stdin/stdout
#constructive algorithms
#math
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4
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YES
1 2 -2 -1
Sample 2
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5
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NO
58%
1918G.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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