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: 3074 @ 9793 # 6587 @ 1399
Example Output: 7679

Example Input: 8157 # 6333 @ 7928
Example Output: 9752

Example Input: 673 # 3964 @ 5282 # 3849 @ 4924 # 6649
Example Output:
-3583