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DescriptionWrite a program that finds and displays all pairs of 5-digit numbers that between them use the digits0through9once each, such that the firs... 阅读全文
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DescriptionA magic island Geraldion, where Gerald lives, has its own currency system. It uses banknotes of several values. But the problem is, the sys... 阅读全文
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Description在N*N的方格棋盘放置了N个皇后，使得它们不相互攻击（即任意2个皇后不允许处在同一排，同一列，也不允许处在与棋盘边框成45角的斜线上。 你的任务是，对于给定的N，求出有多少种合法的放置方法。Input共有若干行，每行一个正整数N≤10，表示棋盘和皇后的数量；如果N=0，表示结束... 阅读全文
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DescriptionDue to recent rains, water has pooled in various places in Farmer John's field, which is represented by a rectangle of N x M (1 2 #include... 阅读全文
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DescriptionLittle Valentine liked playing with binary trees very much. Her favorite game was constructing randomly looking binary trees with capital l... 阅读全文
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DescriptionA math instructor is too lazy to grade a question in the exam papers in which students are supposed to produce a complicated formula for th... 阅读全文
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Description某部队进行新兵队列训练，将新兵从一开始按顺序依次编号，并排成一行横队，训练的规则如下：从头开始一至二报数，凡报到二的出列，剩下的向小序号方向靠拢，再从头开始进行一至三报数，凡报到三的出列，剩下的向小序号方向靠拢，继续从头开始进行一至二报数。。。，以后从头开始轮流进行一至二报数、... 阅读全文
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Two bored soldiers are playing card war. Their card deck consists of exactlyncards, numbered from1ton,all values are different. They divide cards betw... 阅读全文
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You are given a string consisting of parentheses()and[]. A string of this type is said to becorrect:(a)if it is the empty string(b)if A and B are corr... 阅读全文
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DescriptionThe only printer in the computer science students' union is experiencing an extremely heavy workload. Sometimes there are a hundred jobs in... 阅读全文