[백준,c++] 11651번 - 좌표 정렬하기2

11651번: 좌표 정렬하기 2

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

bool cmp(pair<int, int>a, pair<int, int>b) {
    if (a.second != b.second) return a.second < b.second;
    else return a.first < b.first;
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int N; cin >> N;
    vector<pair<int, int>>v;
    while (N--) {
        int x, y; cin >> x >> y;
        v.push_back({ x,y });        
    }
    sort(v.begin(), v.end(), cmp);
    for (int i = 0; i < v.size(); i++) {
        cout << v[i].first << ' ' << v[i].second << "\n";
    }

}