""" day 8 part 1 """

import fileinput
import collections

positions = collections.defaultdict(list)
width = 0
height = 0

for y,row in enumerate(fileinput.input()):
    width = max(width, len(row.strip()))
    height = y + 1
    for x,cell in enumerate(row.strip()):
        if cell != '.':
            positions[cell].append((x,y))


antinodes = set()

for frequency, positions in positions.items():
    for x1, y1 in positions:
        for x2, y2 in positions:
            if x1 != x2 or y1 != y2:
                nx = x1 + (x2 - x1)*2
                ny = y1 + (y2 - y1)*2
                if 0 <= nx < width and 0 <= ny < height:
                    print(f'{frequency} {nx},{ny}')
                    antinodes.add((nx, ny))

print(antinodes)
print(len(antinodes))