#!/usr/bin/python3

trees_count = 0
position = 3 # forth square in, we moved 3 right from where we were, 0 + 3 -> 3
on_first_line = True
line_number = 0

for line in open("input.txt", "r"):
    line_number += 1
    print("line: ", line_number)
    line = line.rstrip()
    print(line)
    if on_first_line:
        on_first_line = False
        continue
    print(line[position], position)
    if line[position] == "#":
        trees_count += 1
        print("hit tree")
    else:
        print("missed tree")
    # now add 3 to the position
    position += 3
    if position >= len(line):
        position = position - len(line)

print("There were", trees_count, "trees")