1. Feed-Quackers(n):You have a pet duck named Quackers who only eats grapes 1, 2, or 3 at a time. If there are n grapes, determine the number of ways Quackers can eat the grapes, where number of ways represents the number of distinct ordered sums of 1,2, or 3 that add up to n. For example, if there are 3 grapes, eating 1 grape then 2 grapes would be considered distinct from eating 2 grapes then 1 grape.