In this task you will be given an arithmetic operation and you have to find its answer. The operators '+' and '-' have been replaced with new symbols. Specifically, '+' has been replaced with the symbol '@' and '-' with the symbol '#'. You need to perform the operations in the given equation return the answer

Input: Consider Input: 9487 # 9520 @ 4047

Output: 4014


Input: Consider Input: 6120 # 9271 # 7167 @ 6916 # 2510 @ 7854 # 7909 # 1960 # 3775

Output: -11702


Input: Consider Input: 2424 # 7442 # 2654 # 4506 @ 1427


Output: -10751