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: 7106 # 9524 # 2673 # 4668 @ 6755 # 5653 # 2688 # 9360

Output: -20705


Input: Consider Input: 2377 @ 4500 # 8359 @ 9946 # 9011

Output: -547


Input: Consider Input: 256 # 8586 # 489 # 6941 # 9550 # 2290 @ 359 @ 3887 @ 2573


Output: -20781