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: 9466 # 395 @ 5036 # 8315 @ 1723

Output: 7515


Input: Consider Input: 7027 @ 2812 @ 3081 @ 8945 # 18 # 3273 @ 222 # 6452 # 5838

Output: 6506


Input: Consider Input: 4787 @ 1873 # 2548 # 5729 @ 1948 @ 4932 # 7660 @ 4785 # 9542


Output: -7154