matr

#include <stdio.h>
#include <stdlib.h>

int main() {
    int n, m;
    char c;
    if (scanf("%d %d%c", &n, &m, &c) == 3 && c == '\n') {
        int **A = malloc(n * sizeof(int *));
        for (int i = 0; i < n; i++)
            A[i] = malloc(m * sizeof(int));
        for (int i = 0; i < n; i++)
            for (int j = 0; j < m; j++)
                if (scanf("%d%c", &A[i][j], &c) == 2 && (c == ' ' || c == '\n')) {

                } else {
                    printf("n/a");
                    break;
                }
        int min = A[0][0];
        int max = A[0][0];
        int str_min = 0;
        int str_max = 0;
        for (int i = 0; i < n; i++)
            for (int j = 0; j < m; j++) {
                if (A[i][j] < min) {
                    min = A[i][j];
                    str_min = i;
                }
                if (A[i][j] > max) {
                    max = A[i][j];
                    str_max = i;
                }
            }
            printf("%d %d %d %d\n", max, min, str_min, str_max);
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++)
                if (i == str_min)
                    printf("%d ", A[str_max][j]);
                else if (i == str_max)
                    printf("%d ", A[str_min][j]);
                else
                    printf("%d ", A[i][j]);
            printf("\b\n");
        }
        printf("\b");
    } else {
        printf("n/a");
    }
    return 0;
}