#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <cmath>
#include <bitset>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
#include <complex>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <cassert>
#include <fstream>
#define popcount __builtin_popcount
using namespace std;
typedef long long int ll;
typedef pair<ll, ll> P;

int main()
{
    int n; cin>>n;
    string s[51], id;
    for(int i=0; i<n; i++){
        cin>>s[i]; cin>>id; s[i]+=("#"+id);
    }
    sort(s, s+n);
    for(int i=0; i<n; i++){
        for(auto c:s[i]){
            if(c=='#') cout<<" ";
            else cout<<c;
        }
        cout<<endl;
    }
    return 0;
}