30 lines
804 B
TypeScript
30 lines
804 B
TypeScript
const fs = require('fs');
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const input = fs.readFileSync(__dirname + '/input.txt', 'utf8');
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const connections: { [key: string]: Array<string> }= {};
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input.split("\n").forEach((conn: string) => {
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const [c1, c2] = conn.split('-');
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connections[c1] = [c2, ...(connections[c1] || [])]
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connections[c2] = [c1, ...(connections[c2] || [])]
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});
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const tCs = new Set;
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for (let key in connections) {
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const conns = connections[key];
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if (key.startsWith('t')) {
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conns.forEach((c2) => {
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connections[c2].forEach((c3) => {
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if (connections[c3].includes(key)) {
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const arr = [key, c2, c3];
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arr.sort();
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tCs.add(arr.join(','));
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}
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})
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})
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}
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}
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console.log(tCs, tCs.size); |