solve 8a and 8b in one file

2021/day8/8.py

@@ -0,0 +1,61 @@
+entries = open("input.txt", 'r').read().splitlines()
+
+summa = 0
+count = 0
+for e in entries:
+	digits = e.split(" | ")[0].split()
+	output = e.split(" | ")[1].split()
+	dic = [set() for i in range(10)] 
+	counts = {'a':0,'b':0,'c':0,'d':0,'e':0,'f':0,'g':0}
+	for s in digits:
+		if len(s) == 4:
+			dic[4].update(set(s))
+		elif len(s) == 2:
+			dic[1].update(set(s))
+		elif len(s) == 3:
+			dic[7].update(set(s))
+		elif len(s) == 7:
+			dic[8].update(set(s))
+		for l in s:
+			counts[l] += 1
+	for l in counts:
+		if counts[l] == 9:
+			for i in range(10):
+				if i not in [1,2,4,7,8]:
+					dic[i].add(l)
+		elif counts[l] == 6:
+			for i in range(10):
+				if i not in [1,2,3,4,7,8]:
+					dic[i].add(l)
+		elif counts[l] == 4:
+			for i in range(10):
+				if i not in [1,4,7,8,3,5,9]:
+					dic[i].add(l)
+		elif l in dic[7] and l not in dic[4]:
+			for i in range(10):
+				if i not in [1,4,7,8]:
+					dic[i].add(l)
+		elif counts[l] == 8:
+			for i in range(10):
+				if i not in [1,4,7,8,5,6]:
+					dic[i].add(l)
+		elif counts[l] == 7 and l in dic[4]:
+			for i in range(10):
+				if i not in [1,4,7,8,0]:
+					dic[i].add(l)
+		else:
+			for i in range(10):
+				if i not in [1,4,7,8,]:
+					dic[i].add(l)
+	
+	for o in range(4):
+		for d in dic:
+			if set(output[o]) == d:
+				index = dic.index(d)
+				summa += index*10**(3-o)
+				if index in [1,4,7,8]:
+					count += 1	
+
+print(count)
+print(summa)
+

2021/day8/input.txt.sample

@@ -0,0 +1,10 @@
+be cfbegad cbdgef fgaecd cgeb fdcge agebfd fecdb fabcd edb | fdgacbe cefdb cefbgd gcbe
+edbfga begcd cbg gc gcadebf fbgde acbgfd abcde gfcbed gfec | fcgedb cgb dgebacf gc
+fgaebd cg bdaec gdafb agbcfd gdcbef bgcad gfac gcb cdgabef | cg cg fdcagb cbg
+fbegcd cbd adcefb dageb afcb bc aefdc ecdab fgdeca fcdbega | efabcd cedba gadfec cb
+aecbfdg fbg gf bafeg dbefa fcge gcbea fcaegb dgceab fcbdga | gecf egdcabf bgf bfgea
+fgeab ca afcebg bdacfeg cfaedg gcfdb baec bfadeg bafgc acf | gebdcfa ecba ca fadegcb
+dbcfg fgd bdegcaf fgec aegbdf ecdfab fbedc dacgb gdcebf gf | cefg dcbef fcge gbcadfe
+bdfegc cbegaf gecbf dfcage bdacg ed bedf ced adcbefg gebcd | ed bcgafe cdgba cbgef
+egadfb cdbfeg cegd fecab cgb gbdefca cg fgcdab egfdb bfceg | gbdfcae bgc cg cgb
+gcafb gcf dcaebfg ecagb gf abcdeg gaef cafbge fdbac fegbdc | fgae cfgab fg bagce