38 lines
915 B
TypeScript
38 lines
915 B
TypeScript
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const fs = require('fs');
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const input = fs.readFileSync(__dirname + '/input.txt', 'utf8');
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const rules: Array<[number, number]> = [];
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const updates: Array<Array<number>> = [];
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let rulesSection = true;
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input.split("\n").forEach((line: string) => {
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if (!line) {
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rulesSection = false;
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return;
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}
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if (rulesSection) {
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rules.push(line.split('|').map((s) => parseInt(s)) as [number, number]);
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} else {
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updates.push(line.split(',').map((s) => parseInt(s)));
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}
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});
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let result = 0;
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updates.forEach((update) => {
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for (let rule of rules) {
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const minIndex = update.indexOf(rule[0]);
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const maxIndex = update.indexOf(rule[1]);
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if (
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minIndex !== -1
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&& maxIndex !== -1
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&& minIndex > maxIndex
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) {
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return;
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}
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}
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result += update[(update.length - 1) / 2];
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});
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console.log(result);
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