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Machine Schedule As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Sche 阅读全文
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String Reconstruction Ivan had string s consisting of small English letters. However, his friend Julia decided to make fun of him and hid the string s 阅读全文
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Permutation Counting Given a permutation a1, a2, … aN of {1, 2, …, N}, we define its E-value as the amount of elements where ai > i. For example, the 阅读全文
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Sum Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 3980 Accepted Submission(s): 1620 Problem D 阅读全文
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Fibonacci-ish Yash has recently learnt about the Fibonacci sequence and is very excited about it. He calls a sequence Fibonacci-ish if You are given s 阅读全文
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A Trivial Problem Mr. Santa asks all the great programmers of the world to solve a trivial problem. He gives them an integer m and asks for the number 阅读全文