from heapq import *
H, W = map(int, input().split())
A = [list(input()) for _ in range(H)]
Q = []
A[0][0] = 0
heappush(Q, (0, 0, 0))
dir = [[1, 0], [0, 1]]
cnt = 0
while Q:
    while Q and Q[0][0] == cnt:
        _, x, y = heappop(Q)
        for xd, yd in dir:
            x1 = x + xd
            y1 = y + yd
            if 0 <= x1 < H and 0 <= y1 < W:
                if A[x1][y1] == ".":
                    A[x1][y1] = cnt + 1
                    heappush(Q, (cnt + 1, x1, y1))
                elif A[x1][y1] == "k":
                    A[x1][y1] = A[x][y] + 1 + x1 + y1
                    heappush(Q, (A[x][y] + 1 + x1 + y1, x1, y1))
    cnt += 1
print(A[H - 1][W - 1])