Problem
A 二级202006-1：计算矩阵边缘元素之和
B 二级202006-2：最长最短单词
C 二级202006-3：啤酒厂选址
D 二级202006-4：统计误差范围内的数
E 二级202006-5：单词排序

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开始二级了（第一轮）

Status: Done
Rule: ACM/ICPC
Problem: 5
Start at: 2023-7-26 9:45
End at: 2023-8-20 9:45
Duration: 600 hour(s)
Host: aging
Partic.: 14