#include <iostream>
using namespace std;
 
int main() {
 
	long long sum = 0, kM = 0, km = 0, n = 0;
	int mass = 0, M = 0, m = 0;
 
	while(cin >> mass){
		if(n == 0){
			M = mass;
			m = mass;
			km = 1;
			kM = 1;
		}
		else{
			if(mass > M){
				M = mass;
				kM = 1;
			}	
			else if(mass == M) kM++;
 
			if(mass < m){
				m = mass;
				km = 1;
			}
			else if(mass == m) km++;
		}
		sum += mass;
		n++;
	}
	n == kM + km? cout << 0 : cout << (2*(sum-kM*M-km*m)+n-kM-km)/(2*(n-kM-km));
	return 0;
}

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NDAgICAyMyAyNwogIDU5IDY4IDIzICAgIDg0ICAgMjcKNTMgNDYg

40   23 27
  59 68 23    84   27
53 46