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: 2808 @ 9510 # 4684 @ 8160 # 7003 # 6631 # 9199 # 455
Example Output: -7494

Example Input: 6904 # 1007 @ 9690 @ 9967 @ 9620 @ 4765
Example Output: 39939

Example Input: 3639 @ 5108 # 8017
Example Output:
730