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: 8238 @ 9817 # 2474 @ 3673 @ 9625 # 849 @ 1441

Output: 29471


Input: Consider Input: 2404 @ 4359 # 5006 # 2796 # 6139

Output: -7178


Input: Consider Input: 8410 # 9894 @ 1778 @ 6648


Output: 6942