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: 9673 @ 7136 # 4171 # 8296 @ 655
Example Output: 4997

Example Input: 3651 @ 4392 @ 7612 # 1575 @ 8307
Example Output: 22387

Example Input: 4690 @ 2728 # 2819 @ 3164 @ 2118 # 5040 # 9110 # 1160 # 2358
Example Output:
-7787