#include <iostream> #include<iomanip> using namespace std; double mx(int a, int b) { if (a > b)return a; else return b; } double mn(int c, int d) { if (c < d)return c; else return d; } int main() { double a, b, c, d, e, f, g; double avg; double max, min; while (cin >> a >> b >> c >> d >> e >> f >> g) { max = mx(a, b); max = mx(max, c); max = mx(max, d); max = mx(max, e); max = mx(max, f); max = mx(max, g); min = mn(a, b); min = mn(min, c); min = mn(min, d); min = mn(min, e); min = mn(min, f); min = mn(min, g); avg = (a + b + c + d + e + f + g - max - min) / 5; cout << setiosflags(ios::fixed) << setprecision(2); cout << avg << endl; } } // 64 位输出请用 printf("%lld")