Disarium Number
A Disarium number equals the sum of its digits raised to their positions (135 = 1¹+3²+5³). Is N Disarium?
Input: one integer N.
Output: YES or NO.
Constraints:
- 1 ≤ N ≤ 109
Sample Tests
Input 1
135
Output 1
YES
Input 2
136
Output 2
NO
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