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: 6277 # 2029 # 4158 @ 5412 # 6845 # 6694 @ 5432

Output: -2605


Input: Consider Input: 1516 # 4681 # 225 # 3393 @ 1212 @ 367

Output: -5204


Input: Consider Input: 7644 # 3099 # 3950 # 6068 # 2092 # 5622 @ 5096


Output: -8091