백준 11651

백준 11651

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main(void) {
    int n;
    cin >> n;
    vector<vector<int>> arr(n, vector<int>(2, 0));
    for (auto& i : arr)
    {
        cin >> i[1] >> i[0];
    }
    sort(arr.begin(), arr.end());

    for (auto i: arr)
        cout << i[1] << " " << i[0] << '\n';
    
}