C :

#include<stdio.h>
int h(int n,int a){
	int t=0,j;
	for(j=1;j<=a;j++){
		t=t*10+n;
	}
	return t;

}
int main()
{
	int a,i,n=0;
	scanf("%d",&a);
	for(i=1;i<=a;i++){
		n=n+h(a,i);
	}
	printf("%d",n);




return 0;
}

C++ :

#include <iostream>
using namespace std;
 
int main(){ 
    int n,i,j,s=0,c=0;
    cin>>n;
    for(i=1;i<=n;i++){
    	for(j=1;j<=i;j++){
    		c=c*10+n;
		}
		s+=c;
		c=0;
	}
	cout<<s<<endl;
}

Java :

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int sum =0;
		String s = "";
		for(int i =1; i <= a; i++) {
			s  = s+a;
			sum += Integer.parseInt(s);
		
		}
		System.out.println(sum);	
	}	
}

Python :

def hs(n,r):
    if n == 1:
        return r;
    else:
        return hs(n-1,r) * 10 + r;
    

n = int(input())
s = 0
for i in range(1,n + 1):
    s +=  hs(i,n)
print(s)