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: 1744 @ 4800 # 4688 @ 2637 # 1656 # 4459 # 9618 @ 4120

Output: -7120


Input: Consider Input: 6322 # 7953 # 5 @ 7093 @ 5659 @ 5045 # 904

Output: 15257


Input: Consider Input: 9194 # 6165 # 2455 @ 2408 # 7425


Output: -4443