#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

void findMaxNumbers(vector<vector<int>> &matrix, int n) {
    vector<int> allElements;
    
    // Flatten the 2D matrix into a 1D array
    for (auto &row : matrix)
        for (int num : row)
            allElements.push_back(num);

    // Sort in descending order
    sort(allElements.rbegin(), allElements.rend());

    // Print the first 'n' largest numbers
    for (int i = 0; i < n; i++) {
        cout << allElements[i] << " ";
        if ((i + 1) % 4 == 0) cout << endl; // Format output into lines
    }
}

int main() {
    // Example 4×4 matrix
    vector<vector<int>> matrix = {
        {2, 4, 6, 8},
        {10, 12, 14, 16},
        {18, 20, 22, 24},
        {26, 28, 30, 32}
    };

    int n = 16; // Get the top 16 maximum numbers
    findMaxNumbers(matrix, n);
    return 0;
}