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Color the ball Time Limit: 9000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 23618 Accepted Submission(s): 114 阅读全文
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Binary trees are defined recursively. A binary tree T is a structure defined on a finite set of nodes that either contains no nodes, or is composed of 阅读全文
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A rooted binary tree is a tree with a root node in which every node has at most two children. Your task is to write a program which reads a rooted bin 阅读全文
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Nowadays, a kind of chess game called “Super Jumping! Jumping! Jumping!” is very popular in HDU. Maybe you are a good boy, and know little about this 阅读全文
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Bessie is such a hard-working cow. In fact, she is so focused on maximizing her productivity that she decides to schedule her next N (1 ≤ N ≤ 1,000,00 阅读全文
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A graph G = (V, E) is a data structure where V is a finite set of vertices and E is a binary relation on V represented by a set of edges. Fig. 1 illus 阅读全文