tj

#include<iostream>
using namespace std;
int main(){
int n,num=0;
double all=0;
cin>>n;
int a[n+1];
for(int i=1;i<=n;i++){
int b;
cin>>b;
a[i]=b;
all+=b;
}
double AV=all/n;
cout<<"AV=";
printf("%.1f",AV);
cout<<endl;
for(int i=1;i<=n;i++){
num++;
if(a[i]>AV){
cout<<num<<":"<<a[i]<<" ";
}
}
return 0;
}