08 2019 档案
摘要：As we know,the fzu AekdyCoin is famous of math,especially in the field of number theory.So,many people call him "the descendant of Chen Jingrun",which
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摘要：Today we play a squiggly sudoku, The objective is to fill a 9*9 grid with digits so that each column, each row, and each of the nine Connecting-sub-gr
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摘要：A Sudoku grid is a 16x16 grid of cells grouped in sixteen 4x4 squares, where some cells are filled with letters from A to P (the first 16 capital lett
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摘要：In the game of Sudoku, you are given a large 9 × 9 grid divided into smaller 3 × 3 subgrids. For example, . 2 7 3 8 . . 1 . . 1 . . . 6 7 3 5 . . . .
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摘要：There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in exactly one of
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摘要：题目描述 给你一个合法的括号序列s1，每次你可以删除一个"()" 你可以删除0个或者多个"()" 求能否删成另一个括号序列s2 输入描述: 第一行输入一个字符串s (2 ≤ |s| ≤ 100)第二行输入一个字符串t (2 ≤ |t| ≤ 100 ) 输出描述: 如果可以输出"Possible"否则
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摘要：题目描述 给你一个长度为50的数字串,问你有多少个子序列构成的数字可以被3整除 答案对1e9+7取模 输入描述: 输入一个字符串，由数字构成，长度小于等于50 输出描述: 输出一个整数 示例1 输入 132 输出 3 示例2 输入 9 输出 1 示例3 输入 333 输出 7 示例4 输入 1234
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摘要：Por Costel the Pig has received a royal invitation to the palace of the Egg-Emperor of Programming, Azerah. Azerah had heard of the renowned pig and w
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摘要：People in Silverland use coins.They have coins of value A1,A2,A3...An Silverland dollar.One day Tony opened his money-box and found there were some co
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摘要：People in Silverland use coins.They have coins of value A1,A2,A3...An Silverland dollar.One day Tony opened his money-box and found there were some co
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摘要：Keeping track of all the cows can be a tricky task so Farmer John has installed a system to automate it. He has installed on each cow an electronic ID
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摘要：Keeping track of all the cows can be a tricky task so Farmer John has installed a system to automate it. He has installed on each cow an electronic ID
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