1313_To_the_question_of_sports.cpp

#include <bits/stdc++.h>

using namespace std;

// Ashfak Hossain Evan, CSE, American International University-Bangladesh (AIUB)

int main()
{

    ios_base::sync_with_stdio(false);
    cin.tie(NULL), cout.tie(NULL);

    // Code Start From Here

    int N;
    scanf("%d", &N);

    int M[100][100];

    for (int i = 0; i < N; ++i)
        for (int j = 0; j < N; ++j)
            scanf("%d", &M[i][j]);

    for (int i = 0; i < 2 * N - 1; ++i)
    {
        for (int c = 0; c <= i && c < N; ++c)
        {
            int r = i - c;
            if (r >= 0 && r < N)
                printf("%d ", M[r][c]);
        }
    }

    return 0;
}