PAT basic 1032

#include <iostream>#include <vector>using namespace std;int main() {    int N;    cin >> N;    vector<int> a(N);//vector<int> a(N);     int num, score;    for (int i = 0; i < N; i++) {        cin >> num >> score;        a[num] += score;    }    int max = a[1], t = 1;    for (int i = 1; i < N; i++) {        if (max < a[i]) {            max = a[i];            t = i;        }    }    cout << t << " " << max;    return 0;}