process.stdin.resume();
process.stdin.setEncoding('utf8');

var lines = []
var reader = require('readline').createInterface({
  input: process.stdin,
  output: process.stdout
});

reader.on('line', (line) => {
  lines.push(line);
});

reader.on('close', () => {
  var N = lines[0];
  for(var i = 0; i < N; i++) {
    var line = lines[i+1].split(" ");
    console.log("hello = " + line[0] + ", world = " + line[1]);
  }