题解 | #合并表记录#

function func() {
    let line;
    while(line = readline()) {
        let obj = {};
        for (let i = 0; i < parseInt(line); i++) {
            let [k, v] = readline().split(' ');
            if (obj[k]) {
                obj[k] += parseInt(v);
            } else {
                obj[k] = parseInt(v);
            }
        }
        for (let k in obj ) {
            print(k + ' ' + obj[k]);
        }
    }
}

func();