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

Input: Consider Input: 9285 # 5492 @ 6629 # 5477 @ 5969 # 8754

Output: 2160


Input: Consider Input: 4470 @ 7285 # 4583 @ 9451 # 3236 # 3108 # 2875

Output: 7404


Input: Consider Input: 5812 # 9168 # 4478 # 1484 @ 2569 @ 9392 # 4048


Output: -1405