题解 | #合并表记录#

const resultObj = {};
function handleArr(lineStr) {
    const key = Number(lineStr.split(' ')[0]);
    const value = Number(lineStr.split(' ')[1]);
    for (const [k, v] of Object.entries(resultObj)) {
        if (k == key) {
            resultObj[k] = v + value;
            return;
        }
    }
    resultObj[key] = value;
}
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
    while (line = await readline()) {
        if (line.split(' ')[1]) {
            handleArr(line);
        }
    }
    // console.log(Object.entries(resultObj));
    for(const arr of Object.entries(resultObj)){
        console.log(...arr);
    }
    // while(line = await readline()){
    //     let tokens = line.split(' ');
    //     let a = parseInt(tokens[0]);
    //     let b = parseInt(tokens[1]);
    //     console.log(a + b);
    // }
}()