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())) {
        const tokens = line.split("."); // 将整数和小数分开
        const m = parseInt(tokens[1][0]); // 小数位的十分位的数值
        const final = m > 4 ? parseInt(tokens[0]) + 1 : parseInt(tokens[0]); // 如果小数位十分位的数值大于4，则证明小数点至少为0.5，即进位，让整数位加1，否则，舍去小数位，整数位不变
        console.log(final);
    }
})();