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: 8524 # 5976 # 1534 @ 266 # 6452 @ 3945 # 2305

Output: -3532


Input: Consider Input: 473 # 2568 @ 9771 # 2525 @ 3277 @ 261 # 8230 @ 6021

Output: 6480


Input: Consider Input: 7476 # 4322 @ 1634 @ 6061 @ 5740 # 8351 # 2386 # 1436


Output: 4416