题目链接
标签:模拟
codeforces-1073B Vasya and Books
Vasya has got n books, numbered from 1 to n, arranged in a stack. The topmost book has number a1, the next one…
字符串加密(JAVA-String)
现要对一个由大写字母组成的字符串进行加密
CodeForces - 1011A A. Stages
Natasha is going to fly to Mars. She needs to build a rocket, which consists of several stages in some order. …