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矩形A + B

Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 11794 Accepted Submission(s): 8802

Problem Description

给你一个高为n ，宽为m列的网格，计算出这个网格中有多少个矩形，下图为高为2，宽为4的网格.

Input

第一行输入一个t, 表示有t组数据，然后每行输入n,m,分别表示网格的高和宽 ( n < 100 , m < 100).

Output

每行输出网格中有多少个矩形.

Sample Input

2
1 2
2 4

Sample Output

3
30

Source

HDU 2008-10 Programming Contest

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