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
    while(line = await readline()){
        // var line = line.spllice(" ");
        // console.log(line[1]);
        var numbers = line.split(" ");
        console.log(numbers[1]);
    }
}()

将输入的一行数字字符串通过空格分割成一个数组,然后输出数组中的第二个整数。