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Time Limit:10000ms Case Time Limit:1000ms Memory Limit:256MB Time Limit:10000ms Case Time Limit:1000ms Memory Limit:256MB Description 在图像处理的技术中，经常会用到算 阅读全文
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DescriptionWPH has a triangle whose three edges are of length a, b, c.He has super power to enlarge the edges, but the total length that was enlarged ... 阅读全文
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DescriptionTo prepare for the English exam Little Ho collected many digital reading materials. Unfortunately the materials are messed up by a malware.... 阅读全文
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DescriptionThere is a tower defense game with n levels(missions). The n levels form a tree whose root is level 1.In the i-th level, you have to spend ... 阅读全文
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DescriptionLittle Hi is studying on memory allocating algorithms this summer. He starts his experiments with a very simple algorithm. By this algorith... 阅读全文
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DescriptionGiven an n*n grid with non-negative integers, you start from the upper left corner (1,1) and can only move right or down.Your task is to fi... 阅读全文
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DescriptionLittle Hi and Little Ho are playing a construction simulation game. They build N cities (numbered from 1 to N) in the game and connect them... 阅读全文
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DescriptionA fancy square image encryption algorithm works as follow:0. consider the image as an N x N matrix1. choose an integer k∈ {0, 1, 2, 3}2. ro... 阅读全文
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DescriptionA base station has to be built on an N × M grid to serve the users in it.There are A users in the grid. The cost of serving a user is the s... 阅读全文
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DescriptionGiven a string, calculate the number of subsequences that are palindrome. A palindrome is a sequence of characters that reads the same back... 阅读全文