#include <iostream> #include <vector> #include <set> 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()