#!/usr/bin/env python3

class cursor():
    def __init__(self, game_map):
        self.x, self.y = 0, 0
        self.limit_x = len(game_map[1])
        self.map = game_map
    def setx(self, x):
        self.x = x % self.limit_x
    def sety(self, y):
        self.y = y
    def isTree(self):
        line = self.map[y]
        char = line[self.x]
        return char == '#'

with open('input', 'r') as f:
    game_map = list(map(str.strip, f.readlines()))

slopes = [(1, 1), (3, 1), (5, 1), (7, 1), (1, 2)]
cur = cursor(game_map)
tree_list = []
for slope in slopes:
    print(slope)
    x, y = 0, 0
    cur.setx(x)
    cur.sety(y)
    try:
        trees = 0
        while True:
            x += slope[0]
            y += slope[1]
            cur.setx(x)
            cur.sety(y)
            if cur.isTree():
                trees += 1
    except IndexError:
        tree_list.append(trees)
result = 1
print(tree_list)
for res in tree_list:
    result *= res

print(result)