题解 | #高精度整数加法#

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

void async function () {
    const a = await readline();
    const b = await readline();
    let i = a.length-1,j = b.length-1,carry = 0,res ="";
    while(i>=0 || j>=0 || carry>0){
        const value = (i >= 0?a.charAt(i--)-0:0) + (j >= 0?b.charAt(j--)-0:0) + carry;
        res = (value%10) + res;
        carry = parseInt(value/10);
    }
    console.log(res||0);
}()