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

Output: 1271


Input: Consider Input: 6796 # 5118 @ 4061 @ 2573 # 7960 @ 5889 # 7812 @ 3174

Output: 1603


Input: Consider Input: 8277 @ 3525 # 4736 # 6292 @ 8330 # 695 # 6827 # 6090


Output: -4508