Island Count

You are given a 2D grid representing a map of 'land' (1) and 'water' (0). Your task is to count the number of distinct islands. An island is surrounded by water and is formed by connecting adjacent lands (horizontally or vertically). Write a program to calculate the number of distinct islands on the map. Input: The first line contains two integers m, n (1 <= m, n <= 100), the dimensions of the grid. The next m lines contain n integers (0 or 1) representing the grid. Output: Print the number of distinct islands. Example: Input: 3 3 1 1 0 0 1 0 0 0 1 Output: 2