输入描述:

The input starts with two integers r c describing the number of rows and columns in the Vin diagram (7 ≤ r,c ≤ 100). The following r rows each contain a string of c characters. All positions that are not part of loop A or loop B are marked with a period (‘.’) character. The loop labels ‘A’ and ‘B’ are placed somewhere around the loops’ perimeters at non-intersection positions and are never on the same loop.

输出描述:

Display, in order, the area of the Vin diagram exclusive to set A, the area exclusive to set B, and the area of the intersection. Given the representation of Vin diagrams, the area of a section is defined as the number of periods (‘.’) it encloses.

7 7 
AXXXX..
X...X.. 
X.XXXXX 
X.X.X.X 
XXXXX.X 
..X...X 
..XXXXB

5 5 1