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: 7542 @ 5447 # 1409 # 4760 # 6595
Example Output: 225

Example Input: 473 # 2568 @ 9771 # 2525 @ 3277 @ 261 # 8230 @ 6021
Example Output: 6480

Example Input: 8539 # 4387 @ 9742 @ 3639 @ 2668 @ 7278 @ 6616 # 6920 @ 9932
Example Output:
37107