Help me in solving CPPFALL461 problem

help
,
1

My issue

give me the solution for this

My code

#include <iostream>
#include <vector>
#include <set>

using namespace std;

int main() {
    int N;
    cin >> N; // Read the number of elements

    vector<int> Arr(N);
    for (int i = 0; i < N; i++) {
        cin >> Arr[i]; // Read array elements
    }

    set<int> uniqueNumbers(Arr.begin(), Arr.end()); // Store unique elements (sorted automatically)

    // Print exactly the three smallest unique numbers
    int count = 0;
    for (int num : uniqueNumbers) {
        cout << num << endl;
        count++;
        if (count == 3) break; // Stop after printing 3 numbers
    }

    return 0;
}

Learning course: Learn Programming and Problem Solving using C++
Problem Link: https://www.codechef.com/learn/course/sit-cpp-fall/SITFALL63/problems/CPPFALL461