Node.js) 백준 28445번: 알록달록 앵무새

https://www.acmicpc.net/problem/28445

28445번: 알록달록 앵무새

 

const [[a, b], [c, d]] = require('fs')
	.readFileSync('./dev/stdin')
	.toString()
	.trim()
	.split('\n')
	.map((v) => v.trim().split(' '));
const possible = new Set();
possible.add(`${a} ${a}`);
possible.add(`${a} ${b}`);
possible.add(`${a} ${c}`);
possible.add(`${a} ${d}`);
possible.add(`${b} ${a}`);
possible.add(`${b} ${b}`);
possible.add(`${b} ${c}`);
possible.add(`${b} ${d}`);
possible.add(`${c} ${a}`);
possible.add(`${c} ${b}`);
possible.add(`${c} ${c}`);
possible.add(`${c} ${d}`);
possible.add(`${d} ${a}`);
possible.add(`${d} ${b}`);
possible.add(`${d} ${c}`);
possible.add(`${d} ${d}`);

console.log([...possible].sort().join('\n'));