Peel the carrots and potatoes and boil them in a little water. Drain them immediately and cool, cut them into cubes, along with mushrooms, some pickles and 2 eggs. Add the peas, corn, and finally mayonnaise. Season with salt and lemon juice to taste. Serve salad in suitable dishes, making it smooth out as a hemisphere. Decorate in the middle with one olive, and end arrange sliced ​​pickles and carrots. Put in two quarters of the eggs.