题解 | 平方根

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

void async function(){
    const lines=await readline()
    const a=Math.sqrt(parseInt(lines))

    console.log(Math.floor(a))
    rl.close()
}()