Island Map Area Counting

You are provided with a grid that represents a map of islands where '1' represents land and '0' represents water. Your task is to find the number of islands on the map. Two pieces of land are part of the same island if they are horizontally or vertically connected. Count the number of distinct islands in the grid. Input: The first line contains two integers n and m (1 <= n, m <= 100), the dimensions of the grid. The following n lines contain m characters ('0' or '1'). Output: An integer representing the number of islands on the map. Example: Input: 4 5 1 0 0 1 0 0 0 1 0 1 1 0 0 0 0 0 1 1 0 0 Output: 5