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: 6385 # 7829 @ 2463 @ 3411 # 652 # 5880 # 6454

Output: -8556


Input: Consider Input: 5525 @ 201 # 6676 # 332 # 3348


Output: -4630


