题解 | #取近似值#

const readline = require('readline');

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});
rl.on('line', function (line) {
   let allNum=Number(line,10);
   let intNum=parseInt(allNum);
    let endNum=0
    if(allNum-intNum>=0.5){
         endNum=intNum+Math.ceil(allNum-intNum)
    }else{
         endNum=intNum+Math.floor(allNum-intNum)
    }
    console.log(endNum)
});