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: 693 # 2562 @ 733 # 3913 @ 310

Output: -4739


Input: Consider Input: 2598 # 1930 @ 3599

Output: 4267


Input: Consider Input: 2718 # 2606 @ 8600 @ 6302 # 2860 # 7690 # 3320 # 1797


Output: -653