C++-数据存储与读入-求长方形的周长和面积（输入长和宽）
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Background
Description
C++-数据存储与读入-求长方形的周长和面积（输入长和宽，皆为正整数）
Format
Input
Output
Samples
6
9
30
54
7
8
30
56
3
5
16
15
Limitation
1s, 1024KiB for each test case.
