Playing table, violence

Description

Give you a grid with a height of N and a m column, and calculate how many rectangles are in this grid, a grid with a height of 2 and a width of 4.

Input

The first line enters a T, which indicates that there is a T-group of data, and then each line enters N,m, representing the height and width of the grid (N < W, m < 100).

Output

The number of rectangles in the output grid per row.

Sample Input

21 22 4

Sample Output

330 Problem-solving ideas: is a water problem, ask for the number of rectangles, seriously count the number, and feel the law on the inside of the program code:

#include <iostream>using namespacestd;intMain () {intT,m,n; CIN>>T;  while(t--) {cin>>m>>N; cout<<n* (n+1)/2*m* (m+1)/2<<"\ n"; }    return 0;}

Playing table, violence