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: 7769 @ 9568 @ 388 # 5101 # 8590 # 9063 # 5298 @ 7728

Output: -2599


Input: Consider Input: 1731 # 9932 # 4056 # 2303

Output: -14560


Input: Consider Input: 6876 @ 9680 # 687 @ 9914 # 7470


Output: 18313