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Eva would like to make a string of beads with her favorite colors so she went to a small shop to buy some beads. There were many colorful strings of b 阅读全文
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As the manager of your company, you have to carefully consider, for each project, the time taken to finish it, the deadline, and the profit you can ga 阅读全文
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Given a list of N integers A1, A2, A3,...AN, there's a famous problem to count the number of inversions in it. An inversion is defined as 阅读全文
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It is vitally important to have all the cities connected by highways in a war. If a city is conquered by the enemy, all the highways from/toward that 阅读全文
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After finishing her tour around the Earth, CYLL is now planning a universal travel sites development project. After a careful investigation, she has a 阅读全文
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Programmers often have a preference among program constructs. For example, some may prefer if(0==a), while others may prefer if(!a). Analyzing such pa 阅读全文