2024 - Day 1 part 2

2024/1/1_2.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+# 2024 - Advent Of Code 1 - part 2
+
+# file = 'input_example.txt'
+file = 'input.txt'
+
+firsts = []
+seconds = {}
+accum = 0
+with open(file, encoding="utf-8") as f:
+    for line in f.readlines():
+        a, b, c, d = line.strip().split(' ')
+        firsts.append(int(a))
+        if int(d) in seconds:
+            seconds[int(d)] += 1
+        else:
+            seconds[int(d)] = 1
+
+for num in firsts:
+    if num in seconds:
+        accum += num * seconds[num]
+
+print(f"sum: {accum}")