Day 5

day05/part2.py

@@ -0,0 +1,24 @@
+lines = (x.strip() for x in open("input.txt"))
+
+reserved = []
+
+
+def parse_binary_string(string: str, ones):
+    length = len(string) - 1
+    cnt = 0
+    for idx, val in enumerate(string):
+        cnt += 2 ** (length-idx) if val == ones else 0
+    return cnt
+
+
+for line in lines:
+    row = parse_binary_string(line[:7], ones="B")
+    col = parse_binary_string(line[7:], ones="R")
+    num = row * 8 + col
+    reserved.append(num)
+
+reserved = sorted(reserved)
+
+for i in range(len(reserved) - 1):
+    if reserved[i+1] - reserved[i] == 2:
+        print(reserved[i]+1)