P1596 [USACO10OCT] Lake Counting S

Due to recent rains, water has pooled in various places in Farmer John's field, which is represented by a rectangle of N x M (1

Line 1: Two space-separated integers: N and M \* Lines 2..N+1: M characters per line representing one row of Farmer John's field. Each character is either 'W' or '.'. The characters do not have spaces between them.

Line 1: The number of ponds in Farmer John's field.

OUTPUT DETAILS: There are three ponds: one in the upper left, one in the lower left, and one along the right side.