const fs = require('fs');
const input = fs.readFileSync('/dev/stdin').toString().split('\n');
const array_number1 = input[0].split(' ');
// console.log(array_number1) = ['10', '5']
const N = Number(array_number1[0]);
const X = Number(array_number1[1]);
// console.log(N) = 10
// console.log(X) = 5
const array_number2 = input[1].split(' ');
// console.log(array_number2) = ['1','10','4','9','2','3','8','5','7','6']
let list= '';
// console.log(list) - []
for (let i = 0; i < N; i++) {
if (Number(array_number2[i]) < X) {
list += array_number2[i] + " ";
// if i 0 일 경우
// array_number2[0] = '1' 을 list에 + 함.
}
}
console.log(list);
변수선언을 줄여보자.