Submission

Score: 50

User: Shangbin

Problemset: จุดแวะพัก

Language: cpp

Time: 0.046 second

Submitted On: 2026-03-05 11:57:39

//จุดแวะพัก 
//Problem = https://grader.gchan.moe/problemset/c2_ds66_rest/statement
#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;

const int maxn = 1005;
int n, k;
string input, subs, name;
map<int, vector<pair<int, string>>> mat;

int main(){
    cin.tie(nullptr)->sync_with_stdio(0);
    cin >> n >> k;
    n++;
    for (int i = 0; i < n; i++){
        getline(cin, input);
        input += " ";
        int index = 0;
        for (auto &c : input){
            if (c == ' '){
                if (index == 0) name = subs;
                else {
                    mat[stoi(subs)].push_back({index, name});
                }
                subs = "";
                index++;
            }
            else subs += c;
        }
    }
    if (mat[k].size() == 0) return cout << -1, 0;
    sort(mat[k].begin(), mat[k].end());
    for (auto i : mat[k]) cout << i.second << ' ';
}