《填空版》

#include <bits/stdc++.h>
using namespace std;
typedef double _;
typedef long long ____________;
#define ________ min
#define _________ max
#define __________ printf
#define ___________ cin
#define _____________ const
_____________ ____________ ______________ = 2;
int main(){
    _ __,___,____,_____,______,_______;
    ___________ >> ___ >> ____ >> _____ >> ______;
    _______ = ___ + ____ + _____ + ______;
    _______ -= (________(________(___,____),________(_____,______)) + _________(_________(___,____),_________(_____,______)));
    __ = _______ / ______________;
    __________("%.2f",__);
    return 0;
}