#include<iostream>
using namespace std;

int main() {
	int n,count;
	while ( cin >> n && n ) {
		count = 0;
		for ( int i = 0; i < 10; i++ ) 
			for ( int j = 0; j < 10; j++ ) 
				for ( int k = 0; k < 10; k++ ) 
					for ( int l = 0; l < 10; l++ ) 
						if ( i + j + k + l  == n )
							count ++;
		cout << count << endl;
	}
	return 0;
}