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Byang's Additions

Limits: 1s, 512 MB

Byang is learning how to add numbers. However, he gets confused whenever there is a carry.

To help Byang you need to write a program that will read two integers and determine if Byang will encounter any carry when adding these two numbers.

For example when adding 182 and 243 Byang will encounter a carry:

  182
+ 243
-----
    5 (Carry 0)
  ---
   25 (Carry 1; This will confuse Byang)
  ---
  425 (Carry 0)

On the other hand, when adding 123 and 321 Byang will not encounter any carry, and it will not confuse Byang:

  123
+ 321
-----
    4 (Carry 0)
  ---
   44 (Carry 0)
  ---
  444 (Carry 0)

Input

The input will contain two space-separated integers A and B (0 ≤ A, B < 1000000).

Output

Print “Yes” if adding A and B will confuse Byang, otherwise “No”.

Samples

InputOutput
182 243
Yes
123 321
No

Discussion