Adventofcode D3-P1

3-1.py

import numpy as np #using numpy

empty = np.empty((1000,1000)) #empty grid
empty[:,:] = 0 #initializing the whole thing to zreoes

def get_input():
    with open("input3-1.txt") as file: #input3-1.txt file contains the input
        for data in file.read().split("\n"):
            if data != "":
                parser(data)

def parser(string):
    id_, _, pos, dimens = string.split(" ") #gets ['#123', '@', '348,782:', '32x36'] from '#123 @ 348,782: 32x36'

    id_ = id_[1:] #gets '123' out of '#123'
    posx = pos.split(',')[0] #gets '348' out of '348,782:'
    posy = pos.split(',')[1][:-1] #gets '782' out of '348,782:'
    dimensx = dimens.split("x")[0] #gets '32' out of '32x36'
    dimensy = dimens.split("x")[1] #gets '36' out of '32x36'
    # print(id_, posx, posy, dimensx, dimensy)

    id_, posx, posy, dimensx, dimensy = int(id_), int(posx), int(posy), int(dimensx), int(dimensy) #str to int
    empty[posy:posy + dimensy,posx: posx + dimensx] += 1 #increasing the overlap regions by 1 each time in the whole region by using numpy
    # print(empty[posy:posy + dimensy,posx: posx + dimensx])


get_input()
print(np.where(empty > 1)) # gives all the overlapping elements as > 1 means two or more overlapped

print(np.count_nonzero(np.where(empty > 1))) #print no. of elements whcih are non-zero and > 1

#this is the answer as the area is the number of elements in that 2d array where it's > 1 (overlap count)