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

#define NUM_COLS 5
#define MAX_ROWS 100

int max_consec_row_diff(int num_rows, int array[MAX_ROWS][NUM_COLS]);

// This is a simple main function which could be used
// to test your max_consec_row_diff function.
// It will not be marked.
// Only your max_consec_row_diff function will be marked.
int main(void) {
  int test_array[MAX_ROWS][NUM_COLS] = {
      {3, 5, 1, 2, 0},  
      {6, 1, 5, 4, 3}, 
      {1, 6, 2, 3, 7},
      {19, 0, 0, 0, 0}, 
      {0, 5, 1, 2, 3},
  };

  int result = max_consec_row_diff(5, test_array);
  // Row sums: 11, 19, 19, 19, 11 → adjacent |diff|: 8, 0, 0, 8 → max 8
  printf("%d\n", result);

  return 0;
}

// Return the largest absolute difference between the sum of one row and the sum
// of the next row, over all consecutive pairs of rows.
// If there is only one row (no consecutive pair), return -1.
int max_consec_row_diff(int num_rows, int array[MAX_ROWS][NUM_COLS]) {
  // PUT YOUR CODE HERE (change the next line!)
  return -1;
}