Count Island Perimeter

You are given a grid representing a map where '1' represents land and '0' represents water. The grid is rectangular, and you need to calculate the perimeter of the island (the land cells) in the map. You should consider that each edge of the land cell contributes to the perimeter unless it is adjacent to another land cell. Input Format: - The first line contains two integers, R (number of rows) and C (number of columns). - The next R lines contain C characters (either '0' or '1') representing the grid. Output Format: - A single integer representing the total perimeter of the island. Example: Input: 4 5 0 0 0 0 0 0 1 1 0 0 0 1 0 0 0 0 0 0 0 0 Output: 8