没毛病，但是为什么0分？

#include<bits/stdc++.h>
using namespace std;
int main(){
    double maxx=-10000,minn=10000;
    double d,c[301],b[301],h=0;
	int n,i,v,k;
	cin>>n;
	for(i=1;i<=n;i++){
    	cin>>c[i];
    	h=h+c[i];
		if(c[i]>maxx){
            maxx=c[i];
            k=i;
        }
        if(c[i]<minn){
            minn=c[i];
            v=i;
        }
	}
	d=(h-c[v]-c[k])/(n-2.00);
	printf("%.2lf\n",d);
	for(i=1;i<=n;i++){
		if(i!=k and i!=v)b[i]=abs(d-c[i]);
		else b[i]=-10001;
	}
    maxx=-10001;
    for(i=1;i<=n;i++)
    	if(b[i]>maxx)maxx=b[i];
	printf("%.2lf\n",maxx);
	return 0; 
}