B'You are given n xe2 x80 x89 xc3 x97 xe2 x80 x89m table. Each cell of the table is colored white or black. Find the number of non-empty sets of cells such that: The first line of input contains integers n and m (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n, xe2 x80 x89m xe2 x80 x89 xe2 x89 xa4 xe2 x80 x8950) -- the number of rows and the number of columns correspondingly. The next n lines of input contain descriptions of rows. There are m integers, separated by spaces, in each line. The number equals 0 if the corresponding cell is colored white and equals 1 if the corresponding cell is colored black. Output single integer -- the number of non-empty sets from the problem description. In the second example, there are six one-element sets. Additionally, there are two two-element sets, the first one consists of the first and the third cells of the first row, the second one consists of the first and the third cells of the second row. To sum up, there are 8 sets. '...