摘要: https://www.acwing.com/problem/content/3305/ input: (2+2)*(1+1) output: 8 #include<unordered_map> const int N = 1e5 + 50; stack<int>num; stack<char>op 阅读全文
posted @ 2021-07-23 00:03 LaiYiC 阅读(30) 评论(0) 推荐(0)