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: 2448 @ 5284 # 6313 @ 7761 @ 4601 @ 6800

Output: 20581


Input: Consider Input: 6868 # 2441 @ 5127 # 8692 @ 9561 # 132 @ 4477 # 9939 @ 6880


Output: 11709