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 () {
    const data = [];
    const newData = [];
    while ((line = await readline())) {
        //存入所有输入值
        data.push(line);
        //存入所有非负数
        if (line >= 0) {
            newData.push(line);
        }
    }
    // 求非负数平均值
    let average = 0;
    newData.forEach((el) => (average += parseInt(el)));
    //输出负数个数
    console.log(data.length - newData.length);
    //非负数存在输出平均数，不存在输出“0.00”
    console.log(
        newData.length > 0 ? (average / newData.length).toFixed(1) : "0.0"
    );
})();