I wonder how , I wonder why !!

Problem Description Mo and Larry have devised a way of encrypting messages. They first decide secretly on the number of columns and write the message (letters only) down the columns, padding with ext

Problem Description Password security is a tricky thing. Users prefer simple passwords that are easy to remember (like buddy), but such passwords are often insecure. Some sites use random computer-ge

Problem Description 对给定的字符串(只包含'z','o','j'三种字符),判断他是否能AC。 是否AC的规则如下： 1. zoj能AC； 2. 若字符串形式为xzojx，则也能AC，其中x可以是N个'o' 或者为空； 3. 若azbjc 能AC，则azbojac也能AC，其中a,b,c为N个'o'或者为空；   Input 输入包含多组测试用例，每行有