#include <iostream> #include <iomanip> #include <vector> #include <algorithm> using namespace std; int main() { vector<int> v; int tmp; for (int i = 0; i < 6; i++) { cin >> tmp; v.push_back(tmp); } sort(v.begin(), v.end(), greater<int>()); float avg = (v[1] + v[2] + v[3] + v[4]) / 4.0; cout << fixed << setprecision(2) << avg << endl; return 0; }