题解 | #单组_二维数组#

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
    let inputCount = 0
    let count = 0
    while(line = await readline()){
        let tokens = line.split(' ');
        // 记录输入的二维数组信息
        if (inputCount === 0) {
            inputCount = tokens[0]
        } else {
            tokens.map((item) => {
                count += parseInt(item, 10)
            })
            inputCount -= 1
            if (inputCount <= 0) {
                console.log(count)
            }
        }
    }
}()

第一次输入的为二维数组的信息，往后都是二维数组的数据。直到到达结束行输出计算结果