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  1. 하나의 값을 입력받을 때
const input = require('fs').readFileSync('/dev/stdin').toString().trim();
  1. 공백으로 구분된 한 줄의 값들을 입력받을 때
const input = require('fs')
.readFileSync('/dev/stdin')
.toString()
.trim()
.split(' ');
  1. 여러 줄의 값들을 입력받을 때
const input = require('fs')
.readFileSync('/dev/stdin')
.toString()
.trim()
.split('\n');
  1. 첫 번째 줄에 자연수 n을 입력받고, 그 다음줄에 공백으로 구분된 n개의 값들을 입력받을 때
const [n, ...arr] = require('fs')
.readFileSync('/dev/stdin')
.toString()
.trim()
.split(/\s/);
  1. 첫 번째 줄에 자연수 n을 입력받고, 그 다음줄부터 n개의 줄에 걸쳐 한 줄에 하나의 값을 입력받을 때
const [n, ...arr] = require('fs')
.readFileSync('/dev/stdin')
.toString()
.trim()
.split('\n');
  1. 하나의 값 또는 공백으로 구분된 여러 값들을 여러 줄에 걸쳐 뒤죽박죽 섞여서 입력받을 때
    ex) n 입력 - 공백으로 구분된 n개의 값 입력 - m 입력 - 여러 줄에 걸쳐 m개의 값 입력
const input = require('fs')
.readFileSync('/dev/stdin')
.toString()
.trim()
.split(/\s/);
const n = input[0];
const n_arr = input.slice(1, n + 1);
const [m, ...m_arr] = input.slice(n + 1);

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