Problem2376--AIO2018P2 - Castle Cavalry

2376: AIO2018P2 - Castle Cavalry

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 9Submit Num: 18Statistics

Description




Sample Input Copy 

5
2
3
2
3
3

Sample Output Copy 

YES

Source/Category

AIO 
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