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A. Counterexample time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output A. Counterexample time 阅读全文
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E. Little Girl and Problem on Trees time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A li 阅读全文
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D. Alyona and a tree time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Alyona has a tree w 阅读全文
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M斐波那契数列 Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 65535/32768 K (Java/Others) Problem Description M斐波那契数列F[n]是一种整数数列,它的定义如下:F[0] = aF[1] = 阅读全文
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D. GukiZ and Binary Operations time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output D. GukiZ a 阅读全文
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C. GukiZ hates Boxes time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output C. GukiZ hates Boxe 阅读全文
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A. Snacktower time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A. Snacktower time limit p 阅读全文
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The Accomodation of Students Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description There are a group of 阅读全文
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50 years, 50 colors Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description On Octorber 21st, HDU 50-year 阅读全文
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找出一个最大的集合使得该集合的任意两个人木有关系。 根据最大独立集 =顶点数 - 最大匹配数 hdu 1068 二分图的最小顶点覆盖数=最大匹配数 hdu 1150 DAG图(无回路有向图)的最小路径覆盖 hdu1151 阅读全文