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: 8698 # 7378 # 9188 @ 5767 # 2935 # 2532 @ 7113
Example Output: -455

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

Example Input: 7172 @ 6281 # 3555 @ 658 @ 1521 @ 102 @ 8657 @ 836
Example Output:
21672