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A-C A: group sticks by same length. Add the size of group / 3 for all groups. B: Divide into few cases, determine the maximal possible bits on in any 阅读全文
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Intro Given a math expression with + or * sign with single digit numbers (1 to 9). Support the following operations: Swap 2 number and evaluate the wh 阅读全文
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Intro This was one of the problems I didn't do during the regional contest. One of my teammates solved it. Observation There are few things to note. F 阅读全文
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The Pilots Brothers' refrigerator Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 35347 Accepted: 13667 Special Judge Description The game 阅读全文
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Flip Game Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 64189 Accepted: 26478 Description Flip game is played on a rectangular 4x4 field 阅读全文