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: 5425 @ 6980 # 4301 @ 4410 # 7405 # 552 @ 4556 # 8531 # 4935
Example Output: -4353

Example Input: 8784 # 2514 # 3182
Example Output:
3088