#include <stdio.h>

#define SIZE 24

void swape(int *a, int *b);

void solve (int n, int m, int a[SIZE][SIZE])
{

    int p1 = -1, p2 = -1;

    int flag = 0;

    int cnt = 0;

    for (int * i = *a; i < *(a + n); i += SIZE)
    {

        if (flag)
            break;

        for (int * j = i; j < i + m; j++)
        {

            if ((i - *a)/SIZE == (j - i))
                break;

            if (*j > 0)
                cnt++;

            if(cnt == 1)
            {

                p1 = (i - *a)/SIZE;

            }

            else if (cnt == 4)
            {

                p2 = (i - *a)/SIZE;

                flag = 1;

                break;

            }

        }

    }

    if ((p1 >= 0) && (p2 >= 0) && (p1 != p2))
        for(int * i = *(a + p1), * j = *(a + p2); (i < *(a + p1)+m && j < *(a + p2)+m); i++, j++)
            swape(i, j);

}

void swape(int *a, int *b)
{

    *a ^= *b;

    *b ^= *a;

    *a ^= *b;

}

int main()
{

    int n, m;

    printf("Enter the matrix size:\n");

    scanf("%d%d", &n, &m);

    int a[SIZE][SIZE];

    printf("Enter the elements of matrix %ix%i:\n", n, m);

    for(int * i = *a; i < *(a + n); i+=SIZE)
    {

        for(int * j = i; j < i + m; j++)
            scanf("%d", j);

    }

    solve(n, m, a);
    printf("\nEdited matrix:\n");

    for (int * i = *a; i < *(a + n); i += SIZE)
    {

        for (int * j = i; j < i + m; j++)
            printf("%d ", *j);

        printf("\n");

    }

}