1.要使用标准库中的string 类型.也要增加头文件 #include<string> 2.例子: #include<iostream> #include<string> using std::string; // 注意using 后面是要接 ";" 号的. using std::cin; using std::cout; using std::endl; int main() { string string_var; cin>>str…
A. Bark to Unlock time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output As technologies develop, manufacturers are making the process of unlocking a phone as user-friendly as possible. To unlock…
CF894A QAQ 题意翻译 题目大意: 给定一个字符串,字符串长度<=100,现在要求出字符串中'QAQ'的个数,注意,'QAQ'可以不连续,只要有顺序就可以了,例如QABQ也有一个QAQ Translated by @Hjl1777 题目描述 "QAQ" is a word to denote an expression of crying. Imagine "Q" as eyes with tears and "A" as a mo…
P3056 [USACO12NOV]笨牛Clumsy Cows 题目描述 Bessie the cow is trying to type a balanced string of parentheses into her new laptop, but she is sufficiently clumsy (due to her large hooves) that she keeps mis-typing characters. Please help her by computing th…
P3056 [USACO12NOV]笨牛Clumsy Cows 题目描述 Bessie the cow is trying to type a balanced string of parentheses into her new laptop, but she is sufficiently clumsy (due to her large hooves) that she keeps mis-typing characters. Please help her by computing th…
1055 The World's Richest (25 分) Forbes magazine publishes every year its list of billionaires based on the annual ranking of the world's wealthiest people. Now you are supposed to simulate this job, but concentrate only on the people in a certain r…
