零分哪里错了呀

#include<bits/stdc++.h>
using namespace std;
int main(){
int n;
int a[500],b[500],maxn=-1,minn=1e9,sum1=0,sum2=0;
cin>>n;
for(int i=1;i<=n;i++){
   cin>>a[i];
   maxn=max(maxn,a[i]);
   minn=min(minn,a[i]);}
for(int i=1;i<=n;i++){
   if(a[i]!=maxn&&a[i]!=minn)
   sum1+=a[i];}
   cout<<fixed<<setprecision(2)<<sum1/(n-2)<<" ";
for(int i=1;i<=n;i++){
   if(a[i]!=maxn&&a[i]!=minn)
   b[i]=fabs(a[i]-1.0*sum1/(n-2));
   sum2+=b[i];}
   cout<<fixed<<setprecision(2)<<sum2;
   return 0;

}