When you adopted, I couldn't answer. The answer at that time was wrong. I'm sure you know the exact number. I'm terribly sorry. . In order to avoid affecting the people who see it, I would like to add something here. .

I'm very sorry for misleading the people I saw. I didn't see the meaning of the question clearly, including other answers, and I was deeply disturbed by the trouble you caused. Now I can finally answer after updating the system. . Each map has 1/2/4 forts, please pay attention. . (as shown in the figure below)