import java.util.Scanner;
public class Main
{
    public static void main(String[] args)
    {
        int n,i,j;
        int[][] a=new int[50][50];
        Scanner sc=new Scanner(System.in);
        n=sc.nextInt();
        for(i=0;i10 && a[i][j]!=20)
                {
                    System.out.println("No");
                    return;
                }
            }
        }
        System.out.println("Yes");
    }
}