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

Example Input: 1508 # 9607 @ 9117 @ 1943 # 3539 # 8743 # 2584 @ 7819
Example Output: -4086

Example Input: 507 @ 3439 # 8086 # 5497 @ 2145 @ 2124 @ 9603 @ 2119 @ 8351
Example Output: 14705

Example Input: 7121 @ 9017 @ 6937 @ 770
Example Output:
23845