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Lake Counting Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 25322 Accepted: 12759 Description Due to recent rains, water has pooled in va 阅读全文
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Description When Xellos was doing a practice course in university, he once had to measure the intensity of an effect that slowly approached equilibriu 阅读全文
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One day Squidward, Spongebob and Patrick decided to go to the beach. Unfortunately, the weather was bad, so the friends were unable to ride waves. How 阅读全文
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Mr. Kitayuta has just bought an undirected graph consisting of n vertices and m edges. The vertices of the graph are numbered from 1 to n. Each edge, 阅读全文