

Input

The input contains a single integer a (1 ≤ a ≤ 30).

Output

Output a single integer.

Example

Input

3


Output

27
import java.util.Scanner;

public class NumbersJoke {
	public static void main(String[] args) {
		Scanner console = new Scanner(System.in);
		int[] jokeNumbers = {4, 22, 27, 58, 85, 94, 
							121, 166, 202, 265, 274, 
							319, 346, 355, 378, 382, 
							391, 438, 454, 483, 517,
							526, 535, 562, 576, 588, 
							627, 634, 636, 645};
		
		System.out.println(jokeNumbers[console.nextInt() - 1]);
	}
}
