B"Petya is the most responsible worker in the Research Institute. So he was asked to make a very important experiment: to melt the chocolate bar with a new laser device. The device consists of a rectangular field of n xe2 x80 x89 xc3 x97 xe2 x80 x89m cells and a robotic arm. Each cell of the field is a 1 xe2 x80 x89 xc3 x97 xe2 x80 x891 square. The robotic arm has two lasers pointed at the field perpendicularly to its surface. At any one time lasers are pointed at the centres of some two cells. Since the lasers are on the robotic hand, their movements are synchronized -- if you move one of the lasers by a vector, another one moves by the same vector. The following facts about the experiment are known: You are given n, m and the cells (x1, xe2 x80 x89y1) and (x2, xe2 x80 x89y2), where the lasers are initially pointed at (xi is a column number, yi is a row number). Rows are numbered from 1 to m from top to bottom and columns are numbered from 1 to n from left to right. You are to find the amount of cells of the field on which the chocolate can't be melted in the given conditions. The first line contains one integer number t (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89t xe2 x80 x89 xe2 x89 xa4 xe2 x80 x8910000) -- the number of test sets. Each of the following t lines describes one test set. Each line contains integer numbers n, m, x1, y1, x2, y2, separated by a space (2 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n, xe2 x80 x89m xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89109, 1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89x1, xe2 x80 x89x2 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n, 1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89y1, xe2 x80 x89y2 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89m). Cells (x1, xe2 x80 x89y1) and (x2, xe2 x80 x89y2) are distinct. Each of the t lines of the output should contain the answer to the corresponding input test set."...