matrix_counter_clock.cpp

#include <iostream>

using namespace std;

int main() {
    int n, m;
    cin >> n >> m;
    int arr[n][m];
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cin >> arr[i][j];
        }
    }
    int rs = 0, re = n - 1, cs = 0, ce = m - 1;
    while (rs <= re && cs <= ce) {
        for (int row = rs; row <= re; row++) {
            cout << arr[row][cs] << " ";
        }
        cs++;
        for (int col = cs; col <= ce; col++) {
            cout << arr[re][col] << " ";
        }
        re--;
        if (cs <= ce) {
            for (int row = re; row >= rs; row--) {
                cout << arr[row][ce] << " ";
            }
            ce--;
        }
        if (rs <= re) {
            for (int col = ce; col >= cs; col--) {
                cout << arr[rs][col] << " ";
            }
            rs++;
        }
    }
    return 0;
}