题解 | #汽水瓶#

买二送一

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()) {
        if (line !== '0') {
            let res = Math.floor(Number(line) / 2);
            console.log(res);
        }
    }
}()