tj

#include <bits/stdc++.h>
using namespace std;
int n,sum;
int a[15];
double AV;
int main(){
    cin>>n;
    for(int i=1;i<=n;i++) cin>>a[i],sum+=a[i];
    AV=sum*1.0/n;
    cout<<"AV=";
    printf("%.1f",AV);
    cout<<endl;
    for(int i=1;i<=n;i++){
        if(a[i]>AV) cout<<i<<":"<<a[i]<<" ";
    }
    return 0;
}