#!/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])

antennas: dict[str, list[tuple[int, int]]] = dict()

for i in range(height):
    for j in range(width):
        char = lines[i][j]
        if char == ".":
            continue
        antennas.setdefault(char, list())
        antennas[char].append((i, j))

antinodes_locations: set[tuple[int, int]] = set()
for char, char_antennas in antennas.items():
    print(f"25 {char} {char_antennas}")
    for ant_a in char_antennas:
        for ant_b in char_antennas:
            if ant_a == ant_b:
                continue
            i, j = 2 * ant_b[0] - ant_a[0], 2 * ant_b[1] - ant_a[1]
            antinode_loc = i, j
            print(f"30 {antinode_loc}")
            if i not in range(height) or j not in range(width):
                continue
            print(f"kept")
            antinodes_locations.add(antinode_loc)

print(len(antinodes_locations))