C :

#include<stdio.h>
int main(){
	int n,i;
	scanf("%d",&n); 
	int a[n];
	double s=0,avg=0;
	for(i=0;i<n;i++){
		scanf("%d",&a[i]);
		s = s + a[i];
	}
	avg = s/n; 
	printf("AVE=%.1lf\n",avg);
	for(i=0;i<n;i++){
		if(a[i]>avg){
		printf("%d:%d ",i+1,a[i]); 
		}
	} 
	return 0;
}

C++ :

#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main(){
	int a[100],n;
	double s=0;
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>a[i];
		s+=a[i];
	}
	s=s/n*1.0;
	cout<<"AV="<<fixed<<setprecision(1)<<s<<endl;
	for(int i=0;i<n;i++){
		if(a[i]>s){
			cout<<i+1<<":"<<a[i]<<" ";
		}
	}
}

Java :

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int x = in.nextInt();
		int[] a = new int[x];
		for(int i=0;i<a.length;i++){
			int y = in.nextInt();
			a[i]=y;
			//System.out.print(a[i]);
		}
		double sum=0;
		for(int i=0;i<a.length;i++){
			sum = sum+Integer.valueOf(a[i]);
		}
		sum =sum/x;
		System.out.println("AV="+String.format("%.1f",sum));
		for(int i=0;i<a.length;i++){
			if(a[i]>sum){
				System.out.print((i+1)+":"+a[i]+" ");
			}
		}
	}
}

Python :

n=int(input())
l1=list(map(int,input().split()))
s=0
for i in range(0,n):
    s+=l1[i]
a=s / n
print('AVE={:.1f}'.format(a))
for i in range(0,n):
    if l1[i] > a:
         print('{}:{}'.format(i + 1,l1[i]),end=' ')
print()