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: 7539 # 9710 # 800 # 5609
Example Output: -8580

Example Input: 5992 @ 7637 # 7427 @ 1102 @ 677 @ 9685 @ 6972
Example Output: 24638

Example Input: 4943 @ 6193 @ 1417 # 8474
Example Output:
4079