var fs = require('fs');

// Read the input from the file
var input = fs.readFileSync('concat.txt').toString().trim();

// Split the input by comma to separate the two arrays
var [firstArrayInput, secondArrayInput] = input.split(',');

// Convert the first array input into an array of numbers
var firstArray = firstArrayInput.split('\n').map(Number).filter(Boolean);

// Convert the second array input into an array of numbers
var secondArray = secondArrayInput.split('\n').map(Number).filter(Boolean);

// Combine both arrays using the spread operator
var combinedArray = [...firstArray, ...secondArray];

// Print the output
console.log(combinedArray.join(' '));