很烦 但简单

#include <iostream>
#include <cstdio>
using namespace std;

int main(){
int a,b,c,d;
cin >> a >> b >> c >> d;
int max;
if(a >= b && a >= c && a >= d) {
max = a;
} else if(b >= a && b >= c && b >= d) {
max = b;
} else if(c >= a && c >= b && c >= d) {
max = c;
} else {
max = d;
}
int min;
if(a <= b && a <= c && a <= d) {
min = a;
} else if(b <= a && b <= c && b <= d) {
min = b;
} else if(c <= a && c <= b && c <= d) {
min = c;
} else {
min = d;
}
double aver = (a + b + c + d - min - max) / 2.0;
printf("%.2f", aver);
return 0;
}