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

Output: -11702


Input: Consider Input: 2113 # 9012 @ 5533 @ 5034 # 9159 # 2169 # 9889

Output: -17549


Input: Consider Input: 2891 @ 1829 # 7997 # 588


Output: -3865