Draw the state diagram for the following. Explain your diagram. Draw the circuit.

?Assume a vending machine. The item for sale costs 200 won. You can use 50 won and 100 won coins only. There will be no change for the person using the vending machine, so the input amount must be exactly 200 won. If the amount goes over 200 won at any point, the current coin inserted is returned and the person needs to insert the correct coin for the amount to be exact