Jackson Day 4, part 1, part 2 (#31)

Author: jacksonmowry

2023/04/jacksonmowry.v

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+module main
+
+import os
+import arrays
+
+fn main() {
+	lines := os.read_lines('scratchcards.input')!
+	mut part_1 := lines.map(it.split(': ')[1])
+		.map(it.split('|').map(it.trim_space().split(' ').filter(it != '').map(it.int())))
+		.map(arrays.concat(it[0], ...it[1]))
+		.map(it.sorted())
+		.map(arrays.uniq_only_repeated(it).len)
+	println('Part 1: ${arrays.sum(part_1.filter(it != 0).map(1 << (it - 1)))!}')
+
+	mut counts := []int{len: lines.len, init: 1}
+	for i := 0; i < part_1.len; i++ {
+		for j := 1; j <= part_1[i]; j++ {
+			counts[i + j] += counts[i]
+		}
+	}
+	println('Part 2: ${arrays.sum[int](counts)!}')
+}

known_outputs/2023/04/jacksonmowry.out

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+Part 1: 13
+Part 2: 30