题解 | 小红的正整数构造

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

void async function () {
    const line = await readline()
    const arr = line.split(" ")
    const num = +arr[2]
    for(i=+arr[0];i<=+arr[1];i++){
        if(i%num === 0){
            console.log(i)
            return
        } 
    }
    console.log(-1)
}()