#!/usr/bin/env python3
# -*- coding: utf-8 -*-

file = "./input.txt"
#file = "./ex.txt"
from time import time
start_time = time()

keypad=[
    ["-","-","1","-","-"],
    ["-","2","3","4","-"],
    ["5","6","7","8","9"],
    ["-","A","B","C","-"],
    ["-","-","D","-","-"]]

def read_file(f:str) -> list:
    out = []
    input_file = open(f, "r")
    for line in input_file:
        line = line.strip()
        if line == "":
            continue
        else:
            line = line.strip()
            out.append(line)
    input_file.close()
    return out

def index_exists(array, i, j):
    try:
        if i>=0 and j>=0 and array[i][j] != "-":
            return True
        else:
            return False
    except IndexError:
        return False

if __name__ == "__main__":
    x, y = 2, 0
    part2 = True
    input_list = read_file(file)
    print("Solution: ",end="")
    for elem in input_list:
        for b in elem:
            if b == "R" and index_exists(keypad, x, y+1):
                y += 1
            elif b == "L" and index_exists(keypad, x, y-1):
                y -= 1
            elif b == "U" and index_exists(keypad, x-1, y):
                x -= 1
            elif b == "D" and index_exists(keypad, x+1, y):
                x += 1

        print(keypad[x][y],end="")
    print()

    # print(input_list)
    print(f'Runtime: {time()-start_time:.2f} s')