和風いろはちゃんイージー / Iroha and Haiku (ABC Edition) AtCoder - 1977 这也太水题了...

和風いろはちゃんイージー / Iroha and Haiku (ABC Edition)

  AtCoder - 1977 

 Problem Statement

 

Iroha loves Haiku. Haiku is a short form of Japanese poetry. A Haiku consists of three phrases with 5, 7 and 5 syllables, in this order.

To create a Haiku, Iroha has come up with three different phrases. These phrases have A, B and C syllables, respectively. Determine whether she can construct a Haiku by using each of the phrases once, in some order.

Constraints

 

• 1≦A,B,C≦10

Input

 

The input is given from Standard Input in the following format:

A B C

Output

 

If it is possible to construct a Haiku by using each of the phrases once, print YES(case-sensitive). Otherwise, print NO.

Sample Input 1

 

5 5 7

Sample Output 1

 

YES

Using three phrases of length 5, 5 and 7, it is possible to construct a Haiku.

Sample Input 2

 

7 7 5

Sample Output 2

 

NO

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转载于:https://www.cnblogs.com/upstart/p/8982409.html