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: 815 @ 7862 # 6166
Example Output: 2511

Example Input: 8041 @ 762 @ 8091 @ 6500
Example Output: 23394

Example Input: 6600 # 5125 @ 4242 # 1385 @ 3763 @ 5300
Example Output:
13395

