#include <bits/stdc++.h>
using namespace std;
vector<double>ad;
vector<long long>ad2;
long long arr[10100], i, j;
int main()
{
double n,w,h=0,p,c=0,a,b=0,m,mx=-1000,mn=1000;
cin>>a>>b;
for(i=0;i<b;i++){
h=0;
c=0;
mx=-1000;
mn=1000;
for(j=0;j<a;j++){
cin>>m;
ad.push_back(m);
}
for(n=0;n<ad.size();n++){
if(ad[n]<mn){
mn=ad[n];
}
else if(ad[n]>mx){
mx=ad[n];
}
}
for(p=0;p<ad.size();p++){
if((ad[p]!=mx)&&(ad[p]!=mn)){
c++;
h+=ad[p];
}
}
cout<<setprecision(2)<<fixed<<h/c<<" ";
ad.clear();
}
}
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