Problem3544--【Div2】USACO 2021Open-BronP1. Acowdemia III

3544: 【Div2】USACO 2021Open-BronP1. Acowdemia III

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 3Submit Num: 3Statistics

Description



Sample Input Copy 

4 5
.CGGC
.CGCG
CGCG.
.CC.C

Sample Output Copy 

4

Source/Category

USACO 二维数组 map 模拟 set 
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