#!/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])

visited: set[tuple[int, int]] = set()

directions = [
    (0, 1),
    (0, -1),
    (1, 0),
    (-1, 0),
]


def get_region(
    pos: tuple[int, int], region: set[tuple[int, int]]
) -> set[tuple[int, int]]:
    region.add(pos)
    i, j = pos
    ochar = lines[i][j]
    for direction in directions:
        i, j = pos[0] + direction[0], pos[1] + direction[1]
        if i not in range(height) or j not in range(width):
            continue
        if (i, j) in region:
            continue
        char = lines[i][j]
        if char != ochar:
            continue
        region |= get_region((i, j), region)
    return region


# def get_sides(region: set[tuple[int, int]]) -> int:
#     peri = 0
#     for axis in (0, 1):
#         oaxis = 0 if axis else 1
#         iss = set([pos[axis] for pos in region])
#         sta: set[int] = set()
#         sto: set[int] = set()
#         for i in iss:
#             line = [pos[oaxis] for pos in region if pos[axis] == i]
#             line.sort()
#             last_j = None
#             for j in line:
#                 if last_j is None:
#                     sta.add(j)
#                 elif last_j == j - 1:
#                     pass
#                 else:
#                     sta.add(j)
#                     sto.add(last_j)
#                 last_j = j
#             if last_j is not None:
#                 sto.add(last_j)
#         peri += len(sta) + len(sto)
#     return peri

def get_perimeter(region: set[tuple[int, int]]) -> int:
    peri = 0
    for axis in (0, 1):
        oaxis = 0 if axis else 1
        iss = set([pos[axis] for pos in region])
        for dire in (-1, 1):
            print(47, axis, dire, iss, peri)
            for i in iss:
                oi = i + dire
                line = [pos[oaxis] for pos in region if pos[axis] == i]
                line.sort()
                # last_j = None
                for j in line:
                    if not axis:
                        opos = oi, j
                    else:
                        opos = j, oi
                    if opos in region:
                        continue
                    peri += 1
    return peri


def get_sides(region: set[tuple[int, int]]) -> int:
    peri = 0
    for axis in (0, 1):
        oaxis = 0 if axis else 1
        iss = set([pos[axis] for pos in region])
        for dire in (-1, 1):
            print(47, axis, dire, iss, peri)
            for i in iss:
                oi = i + dire
                line = [pos[oaxis] for pos in region if pos[axis] == i]
                line.sort()
                last_j = None
                for j in line:
                    if not axis:
                        opos = oi, j
                    else:
                        opos = j, oi
                    if opos in region:
                        last_j = None
                        continue
                    if last_j == j - 1:
                        pass
                    else:
                        peri += 1

                    last_j = j
    return peri


tprice = 0
for i in range(height):
    for j in range(width):
        pos = i, j
        if pos in visited:
            continue
        region = get_region(pos, set())
        visited |= region

        area = len(region)
        sides = get_sides(region)
        price = area * sides
        tprice += price

        char = lines[i][j]
        print(f"{char}: {area} × {sides} = {price}$")

print(tprice)