Enter a positive number n. Find out all 2-digit number whose sum of 2 digits is equal to n.

Input

Contain a single number n.

Constraints

• 1 ≤ n ≤ 18

Output

Print out all 2-digit numbers whose sum of 2 digits is equal to n.

Each solution in one line.

If it doesn't have any solution, print out "NO".

Example 1

Input:
8

Output:
17 = 1 + 7 = 8
26 = 2 + 6 = 8
35 = 3 + 5 = 8
44 = 4 + 4 = 8
53 = 5 + 3 = 8
62 = 6 + 2 = 8
71 = 7 + 1 = 8
80 = 8 + 0 = 8