#include<bits/stdc++.h> using namespace std; int main(){ int n = 5; vector<int>a; set<int>b; for(int i = 1; i <= n; ++i){ a.push_back(i); b.insert(i); } for(int i = 1; i <= n; ++i){ a.push_back(i); b.insert(i); } cout<<a.size()<<b.size()<<endl; return 0; }
程序的输出为( )