solved 4b (in 4a solver), fixed readme

2021/day4/4a.py

@@ -6,6 +6,9 @@ for s in range(2, len(lines),6):
 
 earliestWin = len(draw)
 winBoard = 0
+winsOn = [-1] * len(boards)
+
+# i should really make an attempt to optimize this
 
 for b in range(0, len(boards)):
 	for i in range(0, 5):
@@ -13,27 +16,40 @@ for b in range(0, len(boards)):
 		for j in range(0, 5):
 			if boards[b][i][j] not in draw:
 				break
-			index = draw.index(boards[b][i][j])
+			drawIndex = draw.index(boards[b][i][j])
-			if index > latest:
+			if drawIndex > latest:
-				latest = index 
+				latest = drawIndex 
 		if latest < earliestWin and latest != 0:
 			earliestWin = latest
-			winBoard = int(b)
+			winBoard = b
+		if winsOn[b] == -1 or winsOn[b] > latest:
+			winsOn[b] = latest
 		latest = 0
 		for j in range(0, 5):
 			if boards[b][j][i] not in draw:
 				break
-			index = draw.index(boards[b][j][i])
+			drawIndex = draw.index(boards[b][j][i])
-			if index > latest:
+			if drawIndex > latest:
-				latest = index 
+				latest = drawIndex 
 		if latest < earliestWin and latest != 0:
 			earliestWin = latest
 			winBoard = b
+		if winsOn[b] > latest :
+			winsOn[b] = latest
 
 summa = 0
+summaLose = 0
+winBoard = winsOn.index(min(winsOn))
+loseBoard = winsOn.index(max(winsOn))
 for row in boards[winBoard]:
 	for n in row:
-		if n not in draw[:earliestWin+1]:
+		if n not in draw[:winsOn[winBoard]+1]:
 			summa += n
 
-print(draw[earliestWin]*summa)
+for row in boards[loseBoard]:
+	for n in row:
+		if n not in draw[:winsOn[loseBoard]+1]:
+			summaLose += n
+
+print(draw[winsOn[winBoard]]*summa)
+print(draw[winsOn[loseBoard]]*summaLose)

README.md

@@ -1,13 +1,13 @@
 my solutions for the [Advent of Code](https://adventofcode.com/)
 
-in progress:
+in progress: 
 2021 (python)
 
-planned:
+planned: 
-2022 (swift)
+2022 (swift) 
-2020 (rust?)
+2020 (rust?) 
-2019
+2019 
-2018
+2018 
-2017
+2017 
-2016
+2016 
-2015
+2015