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1784. Perfect Cube

Time Limit:	1 seconds
Memory Limit:	262144KB
Points:	100

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Problem added debug

Дано целое число. Выяснить, является ли оно кубом какого-либо целого числа.

Input

Одно целое число, не превосходящее по модулю 10⁹.

Output

Выведите слово "yes", если входное число является кубом какого-либо целого числа, и "no" - если нет (кавычки выводить не нужно).

Sample

Input	Output
8	yes

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Problem discussion

Author/source:

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time generating 0.109 sec.