Problem3561--【Div2】USACO25-Jan2-Brz-P1- It's Mooin' Time IV

3561: 【Div2】USACO25-Jan2-Brz-P1- It's Mooin' Time IV

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Time Limit : 1.000 sec  Memory Limit : 128 MB

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Description



Sample Input Copy 

2 1
3
MOO
5
OOMOO

Sample Output Copy 

YES
OMO
YES
MOOMO

Source/Category

USACO 字符串 模拟 逆向 
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