题解 | #高精度整数加法#

直接使用BigInt()将字符串或者整数转成长整型。转换后会在整数的末尾加上字符n。

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

void async function () {
    let a=BigInt(await readline()); //9876543210n
    let b=BigInt(await readline()); //1234567890n
	//a+b=11111111100n
    console.log((a+b).toString().replace(/n/,''))

}()