Have your own room, live alone, and the electricity bill is 50 yuan a month?

According to you, you don't have to pay rent for your own house. In terms of basic living expenses, the most important things are electricity, water and meals, but the content of your statement is not clear. 350 yuan means that after paying these basic expenses, the rest is still unpaid before. If you don't pay 350 yuan before, it is obviously not enough to eat.