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

Example Input: 7534 @ 7329 # 2862 # 947 @ 8590 @ 4064
Example Output: 23708

Example Input: 5721 # 7808 @ 2714 # 4149 @ 1060 @ 2516 # 4264
Example Output:
-4210