21736.py

# 헌내기는 친구가 필요해
import sys

N, M = map(int, sys.stdin.readline().split(" "))

map = []
for y in range(N):
    line = list(sys.stdin.readline().rstrip())
    if "I" in line:
        root = [line.index("I"), y]
    map.append(line)


def check(root):
    stack = [root]
    point = 0
    while stack:
        x, y = stack.pop()
        if x < 0 or y < 0 or x >= M or y >= N:
            continue
        if map[y][x] == "O" or map[y][x] == "I":
            map[y][x] = "X"
            stack.append([x + 1, y])
            stack.append([x - 1, y])
            stack.append([x, y + 1])
            stack.append([x, y - 1])
        elif map[y][x] == "P":
            map[y][x] = "X"
            point += 1
            stack.append([x + 1, y])
            stack.append([x - 1, y])
            stack.append([x, y + 1])
            stack.append([x, y - 1])

    return point


point = check(root)
if point:
    print(point)
else:
    print("TT")