题解 | #取近似值#

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()){
        let numb = Number(line);
        let numbFloor = Math.floor(line);//1、向下取整
        let numb2;
		//2、获取小数点后的数值后比较是否向上取整
        if(numbFloor == 0) {
            numb2 = numb;
        } else {
            numb2 = numb - numbFloor;
        }
        console.log(numb2 < 0.5 ? numbFloor : numbFloor + 1);
    }
}()