#include <iostream>
#include <map>
#include <string>

using namespace std;

int main() {
    int n;
    cin >> n;
    map<string, int> students;

    for(int i = 0; i < n; i++) {
        string name;
        int age;
        cin >> name >> age;
        students[name] = age; 
    }

    for(const auto&student : students) {
        cout << student.first << " " << student.second << endl;
    }

    return 0;
}

#include <bits/stdc++.h>

using namespace std; map<string,string>m; int main(){ int n; string age ; string name; cin>>n; for (int i=1;i<=n;i++) {

cin>> name >> age;
m[name]=age;

}map<string,string >::iterator it;
for (it=m.begin(); it!= m.end() ;it++){
cout<<it->first <<" "<<it ->second;
}



return 0;

}

m={} n=int(input()) for i in range(1,n+1): name, age=input().split() age=int(age) m[name]=age sorted_m=dict(sorted(m.items())) for name, age in sorted_m.items(): print(name, age)