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

Output: -5213


Input: Consider Input: 2919 # 2741 @ 497 @ 5230 @ 5250 @ 1797 # 4567 @ 8995 @ 6960

Output: 24340


Input: Consider Input: 3713 @ 6158 @ 7448 # 7997 # 229 @ 8364 # 5798


Output: 11659