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: 4767 # 4944 # 4202 @ 2582

Output: -1797


Input: Consider Input: 2243 # 9188 # 3609 # 6813 @ 6109 @ 6045

Output: -5213


Input: Consider Input: 3097 @ 17 # 8842 @ 4949 @ 8377 @ 425 # 7128 @ 6500


Output: 7395