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摘要： During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. Generally speaking, vil 阅读全文

摘要： A lot of battleships of evil are arranged in a line before the battle. Our commander decides to use our secret weapon to eliminate the battleships. Ea 阅读全文

摘要： Painting some colored segments on a line, some previously painted segments may be covered by some the subsequent ones. Your task is counting the segme 阅读全文

摘要： Now Pudge wants to do some operations on the hook. Let us number the consecutive metallic sticks of the hook from 1 to N. For each operation, Pudge ca 阅读全文

摘要： The citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their electoral posters at all pl 阅读全文

摘要： A-吉姆的运算式 题解：寻找最后出现的数字。 B-沃老师学生的成绩 来自官方题解：score要去掉末尾‘0’，否则可能会TLE。。。还是太菜了。。。别忘了将开始删除的末尾0在输出的时候加上。 感受：对STL提供的模板函数还是不熟啊，学习了一波代码的写法。 阅读全文

摘要： 题解：先只考虑行的填法。根据题意，那么这些行里面都能填啥呢？？？填1，2，3，4，.....，p。所以方法数是p!。再考虑列，同理也是p!。最后。。。。棋盘能旋转90度，乘以2。 阅读全文

摘要： 题解：看到大佬的写的结构体，骤然醒悟，一块蛋糕切k次，这(k+1)块蛋糕是均匀的。所以要保存切的次数，及其对应的蛋糕大小(切了几次后的蛋糕大小)，初始蛋糕的大小。 感受：以前理解的是切蛋糕是均分的，切k次每块大小为Cake/(2^k)。正解是切k次每块大小为Cake/k。 阅读全文

摘要： Pikachu had an array with him. He wrote down all the non-empty subsequences of the array on paper. Note that an array of size n has 2n - 1 non-empty s 阅读全文

摘要： You are given two arrays A and B, each of size n. The error, E, between these two arrays is defined . You have to perform exactly k1 operations on arr 阅读全文