题解 | #记负均正II#

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

void async function () {
    let inputArr = [];
    while(line = await readline()){
        inputArr.push(line);
    }
    let nums = inputArr.map(Number);
    let positive = nums.filter(item => item>=0);
    let negtive = nums.filter(item => item<0);
    console.log(negtive.length);
    if(positive.length){
        let total = positive.reduce((pre,cur) => pre+cur);
        let reverage = (total/positive.length).toFixed(1);
        console.log(reverage)
    } else {
        console.log('0.0');
    }
}()