const fs = require('fs');
const input = fs.readFileSync('./day-1/input.txt').toString();

const lines = input.split('\n');
const result = lines.reduce((acc, line) => {
  if (line === '') {
    if (acc.current > acc.greatest) acc.greatest = acc.current;
    acc.current = 0;
  } else acc.current += parseInt(line);

  return acc;
}, { current: 0, greatest: 0 });

console.log(result);