这里可以用到 multiset 这个容器
c++语言中,multiset是
这里有别的博主详细介绍的
(8条消息) multiset用法总结_二喵君的博客-CSDN博客_multisethttps://blog.csdn.net/sodacoco/article/details/84798621?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522164290361016780269869827%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=164290361016780269869827&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-84798621.first_rank_v2_pc_rank_v29&utm_term=multiset&spm=1018.2226.3001.4187
#include"bits/stdc++.h" #define ll long long #define pi pair#define inf 0x3f3f3f3f using namespace std; const int N = 100005; int n; string a; multiset s; int main() { cin >> n; for(int i=0;i > a; s.insert(a); } for(int i=0;i > a; auto b = s.find(a); if(b!=s.end()) s.erase(b); } cout << s.size() << endl; return 0; }
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