Clothing Store

Chef owns a clothing store and has a limited number of t-shirts in different sizes. There are three sizes available: - Small ($S$): Chef has $X$ small t-shirts. - Large ($L$): Chef has $Y$ large t-shirts. - Extra Large ($XL$): Chef has $Z$ extra-large t-shirts. There are $A$ people who wear small, $B$ people who wear large, and $C$ people who wear extra-large t-shirts. Each person is happy if th