#include<bits/stdc++.h>
using namespace std;

struct patient {
    string id;
    int year;
};

int main() {
    int n;
    cin >> n;

    int num = 0, cnt = 0;
    patient p[n];
    patient x[n];
    string young[n];
    for (int i = 0; i < n; i++) {
        cin >> p[i].id >> p[i].year;
        x[i].id = p[i].id;
        x[i].year = p[i].year;
    }

    for (int j = 0; j < n; j++) {
        if (p[j].year >= 60)
            num++;
        else
            young[cnt] = p[j].id;
        cnt++;
    }

    for (int i = 0; i < n - 1; i++)
        for (int j = 0; j < n - 1 - i; j++) {
            int temp_year;
            string temp_id;
            if (x[j].year < x[j + 1].year) {
                temp_year = x[j].year;
                temp_id = x[j].id;
                x[j].year = x[j + 1].year;
                x[j].id = x[j + 1].id;
                x[j + 1].year = temp_year;
                x[j + 1].id = temp_id;
            }
        }

    for (int i = 0; i < num; i++) {
        cout << x[i].id << endl;
    }
    for (int j = 0; j < cnt; j++) {
        cout << young[j] << endl;
    }
    return 0;
}