P10993 [MX-J3-T0] 37
Background
Original link: 。
Description
Input a natural number $a$, and determine whether all digits of $37\times a$ are equal.
Input Format
The input contains one line with one natural number $a$.
Output Format
If all digits of $37a$ are equal, output `Yes`; otherwise output `No`.
Explanation/Hint
**Sample Explanation #1**
$37\times 6 = 222$, and its three digits are all $2$, which meets the requirement.
**Sample Explanation #2**
$37\times 33 = 1221$, and some digits are not equal (for example, the thousands digit and the hundreds digit), so it does not meet the requirement.
**Constraints**
This problem has $20$ test points, $5$ points each.
It is guaranteed that $0\le a \le 3737$.
Translated by ChatGPT 5