题解 | #合并表记录#

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()) {
        let n = parseInt(line);

        let obj = {};
        for (let i = 0; i < n; i++) {
            let str = await readline();
            let [k, v] = str.split(' ');
            if (obj[k]) {
                obj[k] += parseInt(v);
            } else {
                obj[k] = parseInt(v);
            }
        }
        for (let key in obj) {
            console.log(key + ' ' + obj[key])
        }
    }
}()