摘要：股票买卖 V 给定一个长度为 $N$ 的数组，数组中的第 $i$ 个数字表示一个给定股票在第 $i$ 天的价格。 设计一个算法计算出最大利润。在满足以下约束条件下，你可以尽可能地完成更多的交易（多次买卖一支股票）: 你不能同时参与多笔交易（你必须在再次购买前出售掉之前的股票）。 卖出股票后，你无法在 阅读全文

摘要：B. Complete The Graph ZS the Coder has drawn an undirected graph of $n$ vertices numbered from $0$ to $n - 1$ and $m$ edges between them. Each edge of 阅读全文

摘要：F. Ira and Flamenco Ira loves Spanish flamenco dance very much. She decided to start her own dance studio and found $n$ students, $i$th of whom has le 阅读全文

摘要：G. Hits Different In a carnival game, there is a huge pyramid of cans with $2023$ rows, numbered in a regular pattern as shown. If can $9^2$ is hit in 阅读全文

摘要：D. Fish Graph You are given a simple undirected graph with $n$ nodes and $m$ edges. Note that the graph is not necessarily connected. The nodes are la 阅读全文

摘要：D. Running Miles There is a street with $n$ sights, with sight number $i$ being $i$ miles from the beginning of the street. Sight number $i$ has beaut 阅读全文