30 lines
780 B
JavaScript
30 lines
780 B
JavaScript
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const fs = require('fs');
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const data = fs.readFileSync('input.txt', 'utf-8');
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const lines = data.split('\n').map(num => parseInt(num));
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const preambleLength = 25;
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let sum
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for (let i = preambleLength; i < lines.length; i++) {
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valid = false
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for (let j = i-preambleLength; j < i && !valid; j++) {
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for (let k = j+1; k < i && !valid; k++) {
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if (lines[j]+lines[k]== lines[i]) {
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valid = true
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}
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}
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}
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if (!valid) {
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sum = lines[i]
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break
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}
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}
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for ( let start = 0; start < lines.length; start++) {
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for (let end = start+1; end < lines.length; end++) {
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if (lines[end] > sum) {continue}
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let range = lines.slice(start, end)
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if (range.reduce((a,b) => (a+b)) == sum) {
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console.log(Math.min(...range)+ Math.max(...range))
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}
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}
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}
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