Problem:
Score : 100 points

Problem Statement

Based on some criterion, Snuke divided the integers from 1 through 12 into three groups as shown in the figure below.
Given two integers x and y (1 ≤ x < y ≤ 12), determine whether they belong to the same group.

Constraints

x and y are integers.

1 ≤ x < y ≤ 12

Input

Input is given from Standard Input in the following format:

x y

Output

If x and y belong to the same group, print Yes; otherwise, print No.

Sample Input 1

1 3

Sample Output 1

Yes

Sample Input 2

2 4

Sample Output 2

No

Solution in C (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>

int main(int argc, char const *argv[]) {
  int x, y;
  scanf("%d %d", &x, &y);
  int x_group, y_group;
  if (x == 4 || x == 6 || x == 9 || x == 11) {
    x_group = 2;
  }
  else if (x == 2) {
    x_group = 3;
  }
  else {
    x_group = 1;
  }
  if (y == 4 || y == 6 || y == 9 || y == 11) {
    y_group = 2;
  }
  else if (y == 2) {
    y_group = 3;
  }
  else {
    y_group = 1;
  }

  if (x_group == y_group) {
    printf("Yes\n");
  }
  else {
    printf("No\n");
  }
  return 0;
}