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: 7211 # 614 @ 1584 # 4857 # 1495 # 1821 # 2219

Output: -2211


Input: Consider Input: 4264 # 4438 @ 3871 @ 7585 # 540 # 3455 # 6016

Output: 1271


Input: Consider Input: 7252 # 8553 # 4853 @ 6748 # 3750


Output: -3156


