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+...594............*...$.654.....+.........*........................84.*....7...231.$102.......286.......*760....817.......719.........*..... +..................620............806......866.................559......440...........................310...........................590..547. diff --git a/2023/03/main.py b/2023/03/main.py new file mode 100644 index 0000000..c4eb86f --- /dev/null +++ b/2023/03/main.py @@ -0,0 +1,78 @@ + + +def is_symbol(c): + symbols = list("+-*/=#%&$@") + res = c in symbols + return res + +def get_num(row, col): + cursor = col + num = 0 + num_left = -1 + num_right = -1 + + if file[row][col].isdigit(): + num_left = cursor + while file[row][cursor].isdigit() and cursor >= 0: + num_left = cursor + cursor -= 1 + cursor = col + while file[row][cursor].isdigit() and cursor <= len(file[row]): + num_right = cursor + cursor += 1 + num = int(file[row][num_left:num_right+1]) + + s = list(file[row]) + for i in range(num_left, num_right+1): + s[i] = "." + file[row] = "".join(s) + return num + + +def get_adj_numbers_sum(row, col): + partial_sum = 0 + gear_product = 0 + gear_product_parts = [] + + tl = get_num(row-1, col-1) + t = get_num(row+1, col) + tr = get_num(row-1, col+1) + + l = get_num(row, col-1) + r = get_num(row, col+1) + + bl = get_num(row+1, col-1) + b = get_num(row-1, col) + br = get_num(row+1, col+1) + + adj = [tl,t,tr,l,r,bl,b,br] + + if file[row][col] == "*": + for i in range(len(adj)): + if adj[i] >= 1: + gear_product_parts.append(adj[i]) + if len(gear_product_parts) == 2: + gear_product = gear_product_parts[0] * gear_product_parts[1] + + partial_sum = tl+t+tr+l+r+bl+b+br + + return partial_sum, gear_product + + +def solve(file): + part_1 = 0 + part_2 = 0 + + for i in range(1, len(file)-1): + for j in range(len(file[i])): + if is_symbol(file[i][j]): + res = get_adj_numbers_sum(i, j) + part_1, part_2 = part_1 + res[0], part_2 + res[1] + + return part_1, part_2 + + +file = open("input.txt", "r").readlines() + +ans1, ans2 = solve(file) +print(f"Part 1: {ans1}\nPart 2: {ans2}") diff --git a/2023/03/test_input.txt b/2023/03/test_input.txt new file mode 100644 index 0000000..b20187f --- /dev/null +++ b/2023/03/test_input.txt @@ -0,0 +1,10 @@ +467..114.. +...*...... +..35..633. +......#... +617*...... +.....+.58. +..592..... +......755. +...$.*.... +.664.598..