Day 2

day2.py

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+def parse(text):
+    return [[int(num) for num in line.split('\t')] for line in text.splitlines()]
+
+with open('input/day2') as inp:
+    puzzle_input = parse(inp.read())
+
+def part1(sheet):
+    return sum(max(row) - min(row) for row in sheet)
+
+assert part1([
+    [5, 1, 9, 5],
+    [7, 5, 3],
+    [2, 4, 6, 8],
+]) == 18
+
+print(part1(puzzle_input))
+
+from itertools import combinations
+
+def part2(sheet):
+    s = 0
+    for row in sheet:
+        for n, m in combinations(row, 2):
+            lo = min(n, m)
+            hi = max(n, m)
+            if hi % lo == 0:
+                s += hi // lo
+                break
+    return s
+
+assert part2([
+    [5, 9, 2, 8],
+    [9, 4, 7, 3],
+    [3, 8, 6, 5],
+]) == 9
+
+print(part2(puzzle_input))

input/day2

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+121	59	141	21	120	67	58	49	22	46	56	112	53	111	104	130
+1926	1910	760	2055	28	2242	146	1485	163	976	1842	1982	137	1387	162	789
+4088	258	2060	1014	4420	177	4159	194	2794	4673	4092	681	174	2924	170	3548
+191	407	253	192	207	425	580	231	197	382	404	472	164	571	500	216
+4700	1161	168	5398	5227	5119	252	2552	4887	5060	1152	3297	847	4525	220	262
+2417	992	1445	184	554	2940	209	2574	2262	1911	2923	204	2273	2760	506	157
+644	155	638	78	385	408	152	360	588	618	313	126	172	220	217	161
+227	1047	117	500	1445	222	29	913	190	791	230	1281	1385	226	856	1380
+436	46	141	545	122	86	283	124	249	511	347	502	168	468	117	94
+2949	3286	2492	2145	1615	159	663	1158	154	939	166	2867	141	324	2862	641
+1394	151	90	548	767	1572	150	913	141	1646	154	1351	1506	1510	707	400
+646	178	1228	1229	270	167	161	1134	193	1312	1428	131	1457	719	1288	989
+1108	1042	93	140	822	124	1037	1075	125	941	1125	298	136	94	135	711
+112	2429	1987	2129	2557	1827	477	100	78	634	352	1637	588	77	1624	2500
+514	218	209	185	197	137	393	555	588	569	710	537	48	309	519	138
+1567	3246	4194	151	3112	903	1575	134	150	4184	3718	4077	180	4307	4097	1705