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: 4688 # 4301 # 9301 # 7246 # 6377 @ 8027 @ 425 @ 3557
Example Output: -10528

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

Example Input: 136 @ 9772 # 2848 # 4980 @ 6156 # 883 @ 5407 @ 3211
Example Output:
15971