题解 | #整型数组合并#

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

void async function () {
    // Write your code here   
    const  arr = []
    let count = 0
    while(line = await readline()){
         count++
         if(count % 2 == 0) {
            arr.push(...line.split(" ").map(Number))
         }
    }
    arr.sort((a,b) => a-b )
    let res = new Set(arr)
    console.log([...res].join(''))
}()