If I exercise, how many sweets can I eat per week?

I just lost some weight, but i need to know how many sweets (in moderation of course) i can eat in a week. I work out at the gym for at least an hour, 4 times a week (sometimes more). I eat mad healthy too. Since i'm exercising, how many sweets could I eat, and not gain weight? If it helps, i'm 115 ILB, 5,4', and a teen.