#!/usr/bin/env python3

import sys

input_file = sys.argv[1]

with open(input_file) as fd:
    lines = [line.rstrip() for line in fd.readlines()]

height = len(lines)
width = len(lines[0])

count = 0
for i in range(1, height - 1):
    for j in range(1, width - 1):
        if lines[i][j] != "A":
            continue
        tl = lines[i - 1][j - 1]
        br = lines[i + 1][j + 1]
        tr = lines[i - 1][j + 1]
        bl = lines[i + 1][j - 1]
        if not ((tl, br) == ("M", "S") or (tl, br) == ("S", "M")) or not (
            (tr, bl) == ("M", "S") or (tr, bl) == ("S", "M")
        ):
            continue
        count += 1
print(count)