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: 634 # 6766 # 1458 # 4376 @ 9425

Output: -2541


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

Output: 7515


Input: Consider Input: 9256 @ 4376 # 3423 @ 215 @ 8484 # 1462 @ 4705 # 6189


Output: 15962