#include <iostream> #include <vector> #include <algorithm> using namespace std; int main() { int a; vector<int> v; while (cin >> a) { // 注意 while 处理多个 case vector<int> v2; for (int i = 0; i < a; i++) { int temp; cin >> temp; v2.push_back(temp); } sort(v2.begin(), v2.end()); v.push_back(v2[v2.size() - 1]); v.push_back(v2[0]); v2.clear(); } int count = 1; for (int i = 0; i < v.size(); i++) { cout << v[i]; if(count==2) { cout<<endl; count = 0; } else { cout <<" "; count++; } } } // 64 位输出请用 printf("%lld")