摘要：Problem DescriptionLet's play a card game called Gap.You have 28 cards labeled with two-digit numbers. The first digit (from 1 to 4) represents the suit of the card, and the second digit (from 1 to 7) represents the value of the card.First, you shu2e the cards and lay them face up on the table i 阅读全文

摘要：Problem Description在魔方风靡全球之后不久，Rubik先生发明了它的简化版——魔板。魔板由8个同样大小的方块组成，每个方块颜色均不相同，可用数字1-8分别表示。任一时刻魔板的状态可用方块的颜色序列表示：从魔板的左上角开始，按顺时针方向依次写下各方块的颜色代号，所得到的数字序列即可表示此时魔板的状态。例如，序列(1,2,3,4,5,6,7,8)表示魔板状态为：1 2 3 48 7 6 5对于魔板，可施加三种不同的操作，具体操作方法如下：A: 上下两行互换,如上图可变换为状态87654321B: 每行同时循环右移一格,如上图可变换为41236785C: 中间4个方块顺时针旋转一格 阅读全文

摘要：Problem DescriptionThe 15-puzzle has been around for over 100 years; even if you don't know it by that name, you've seen it. It is constructed with 15 sliding tiles, each with a number from 1 to 15 on it, and all packed into a 4 by 4 frame with one tile missing. Let's call the missing ti 阅读全文

摘要：Problem DescriptionConsider equations having the following form:a1x13+ a2x23+ a3x33+ a4x43+ a5x53=0The coefficients are given integers from the interval [-50,50].It is consider a solution a system (x1, x2, x3, x4, x5) that verifies the equation, xi∈[-50,50], xi != 0, any i∈{1,2,3,4,5}.Determine how 阅读全文