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Problem StatementThere is a grid with $H$ rows from top to bottom and $W$ columns from left to right. Let $(i, j)$ denote the square at the $i$-th row 阅读全文
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section> Problem StatementFor sequences $B=(B_1,B_2,\dots,B_M)$ and $C=(C_1,C_2,\dots,C_M)$, each of length $M$, consisting of non-negative integers, 阅读全文
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Problem StatementOn a number line, there are $N$ fish swimming. Fish $i$, which has a weight of $W_i$, is at the coordinate $X_i$ at time $0$ and move 阅读全文
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Problem StatementIn a two-dimensional plane, there are $N$ towns and $M$ chests. Town $i$ is at the coordinates $(X_i,Y_i)$, and chest $i$ is at the c 阅读全文