题解 | 单组_spj判断浮点误差
单组_spj判断浮点误差
https://www.nowcoder.com/practice/6652094c6a0e4381911b541ed664d8b7?tpId=372&tags=&title=&difficulty=&judgeStatus=&rp=0&sourceUrl=%2Fexam%2Foj%3FquestionJobId%3D10%26subTabName%3Donline_coding_page&gioEnter=menu
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
line = await readline()
let tokens = line.split(' ');
let a = parseInt(tokens[0]);
console.log((a*a*Math.PI).toFixed(6))
}()
