Submission

Score: 100

User: nate213121

Problemset: จับคู่เลขมงคล

Language: cpp

Time: 0.004 second

Submitted On: 2026-09-17 19:33:53

#include <bits/stdc++.h>

using namespace std;

int main()
{
    set<int> existing;
    int n;
    cin >> n;
    vector<int> v;
    for(int i = 0; i < n; i++)
    {
        int tmp;
        cin >> tmp;
        v.push_back(tmp);
        existing.insert(tmp);
    }
    int target;
    cin >> target;

    set<int> done;
    int c = 0;

    for(int i = 0; i < n; i++)
    {
        int complement = target - v[i];
        if(complement != v[i] && done.find(v[i]) == done.end() && existing.find(complement) != existing.end())
        {
            cout << v[i] << " " << complement << endl;
            done.insert(v[i]);
            done.insert(complement);
            c++;
        }
    }
    if(c == 0)
    {
        cout << "No";
    }

    return 0;
}