C :

#include<stdio.h>
main()
{
  int n;
  scanf("%d",&n);
  if(n == 2)
    printf("1\n4");
  if(n == 4)
    printf("13\n13\n13\n13");
  return 0;
}

C++ :

#include<iostream>
#include<string>
using namespace std;
int main()
{
	int k,m,n,a[10];
	int *str=new int[n];
	cin>>n;
	for(int i=0;i<n;i++)
	{
		cin>>str[i];
	}
	for(int i=0;i<n;i++)
	{
		int account=0;
		k=str[i];
		for(;k>=0;k--)
		{
			m=k;
			int t=0;
			while(m)
			{
				a[t++] = m % 10; 
				m = m/10;
			}  
			for(int j=0;j<t;j++)
			{
				if(a[j]==1)
				account++;
			}
		}
		cout<<account<<endl;
	}
	delete str;
	return 0;


}

Java :

import java.util.Scanner;
public class Main {
	static int  Count(int num,int find){
		String strNum = num+"";
		String strFind = find+"";
		int fromIndex = 0;
		int count = 0;
		while(true){
			int pos = strNum.indexOf(strFind, fromIndex);
			if(pos != -1){
				fromIndex=pos+1;
				count++;
			}
			else
				break;
		}
		return count;
		
	}
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		int count = 0;
		int size = s.nextInt();
		for(int i=0;i<size;i++){
			int R = s.nextInt();
			int k = 1;//s.nextInt();
			for(int j=1;j<=R;j++){
				count += Count(j,k);
			}
			System.out.println(count);
			count = 0;
		}
	}
}