Nobita and The Magic Jar

Problem description Once Doraemon showed Nobita his new gadget,which was called magic jar. The speciality of the jar was that if at once it gets fully filled by a juice,then even after taking out juice from it many times, it automatically gets refilled by a particular quantity i. e. 'L' litres every hour. As always, he took the gadget from Doraemon and to flaunt to his friends he organised a par