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

#define BUFFER_SIZE 1024 * 16

int main(int argc, char *argv[]) {
    if(argc == 1) {
        fprintf(stderr, "Chybi cesta ke vstupnimu a vystupnimu souboru.");
        exit(1);
    } else if(argc == 2) {
        fprintf(stderr, "Chybi cesta k vystupnimu souboru.");
        exit(1);
    }

    FILE* input = fopen(argv[1], "r");
    FILE *output = fopen(argv[2], "w");
    char line[BUFFER_SIZE];
    int y = -1;
    int width;
    int height;
    int **arr;

    if (input == NULL)
    {
        fprintf(stderr, "Vstupni soubor \"%s\" neexistuje", argv[1]);
        exit(1);
    }

    while (fgets(line, BUFFER_SIZE, input))
    {
        char* tmp = strdup(line);
        int x = 0;
        const char* tok;

        for (tok = strtok(line, " ");
             tok && *tok;
             tok = strtok(NULL, " \n"))
        {
            if(y == -1) {
                if(x == 0) {
                    width = strtol(tok, NULL, 10);
                } else if(x == 1) {
                    height = strtol(tok, NULL, 10);

                    arr = (int **)malloc(height * sizeof(int *));
                    for (int i=0; i<height; i++)
                        arr[i] = (int *)malloc(width * sizeof(int));
                }
            }
            //printf("%d ", strtol(tok, NULL, 10));
            if(y != -1) {
                arr[x][y] = strtol(tok, NULL, 10);
            }
            x++;
        }

        free(tmp);
        y++;
    }

    for (int i = 0; i <  height; i++) {
        for (int j = 0; j < width; j++) {
            if(j == 0) {
                fprintf(output, "%d", arr[i][j]);
            } else if(j == width - 1) {
                fprintf(output, " %d\n", arr[i][j]);
            } else {
                fprintf(output, " %d", arr[i][j]);
            }
        }
    }

    fclose(input);
    fclose(output);

    for (int i = 0; i < height; i++)
    {
        int* currentIntPtr = arr[i];
        free(currentIntPtr);
    }
    free(arr);

    return 0;
}