If 99% of males died, then what would Catholicism do for priests?

Eh just something I thought of re movies / series like The Last Man on Planet Earth or Y: The Last Man . Case 1: 99% of males die. Then what? Case 2: Or idk doesn't have to be scifi: There could just be like a 90% drop for incoming priests sometime in the future. No males die. People are still Catholic. Just less interest in becoming priests. Then what?