/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) 
	{
		int x=0;
		int sum=0;
		int t;
	for (int i = 0; i < 1000000; i++){
		sum=0;
		t=i;
		while(i != 0){
       //Суммирование цифр числа
        sum += (i % 10);
        i/=10;
 
		}if (sum==45){x++;} 
		i=t;
 
}	System.out.println(x);
	}
}

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