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二分算法--模板及原理总结
【代码】二分算法--模板及原理总结。
Codeforces Round #790 (Div. 4)D. X-Sum
Timur's grandfather gifted him a chessboard to practice his chess skills. This chessboard is a gridaawithnnrows andmmcolumns with each cell having anon-negativeinteger written on it.Timur's challenge
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