Seems like you got some warings, I think you can follow the prompts to modify if it has. And some warings just wants to remind you know what are doing. Eg: it may say: loop to deep and may cost all gas, so you need to notice the length to loop. But actually for your contract, it just has two elements to loop. Anyway, you should know what dose this waring mean, and judge for yourself if it will affect you.