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: 3556 # 1722 @ 9362 # 7616 # 7893

Output: -4313


Input: Consider Input: 9466 # 395 @ 5036 # 8315 @ 1723

Output: 7515


Input: Consider Input: 3709 @ 206 # 4363 @ 3129 @ 2506


Output: 5187