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const fs = require('fs');
const input = fs.readFileSync('./day-1/input.txt').toString();
const TOP_AMOUNT = 3;
const lines = input.split('\n');
const result = lines.reduce((acc, line) => {
if (line === '') {
acc.sums.push(acc.current);
acc.current = 0;
} else acc.current += parseInt(line);
return acc;
}, { current: 0, sums: [] });
const topSums = result.sums.sort((a, b) => b - a).slice(0, TOP_AMOUNT);
const totalTopSum = topSums.reduce((acc, value) => acc + value, 0);
console.log(totalTopSum);
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