题解 | #多组_二维数组_T组形式#

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
    const group = parseInt(await readline())
    let i = 0;
    while(i < group){
        let sum = 0;
        let [row,col] = (await readline()).split(' ');
        let j = 0;
        while(j<row){
            let lArr = (await readline()).split(' ')
            sum += lArr.reduce((a,c)=> a+ parseInt(c),0)
            j++
        }
        console.log(sum);
        i++
    }
}()