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: 2243 # 9188 # 3609 # 6813 @ 6109 @ 6045

Output: -5213


Input: Consider Input: 2931 @ 2088 @ 4090 # 4838 # 6154 # 8570 @ 8518 @ 1737

Output: -198


Input: Consider Input: 6618 # 2842 # 6306 # 3697 @ 8068 @ 2468


Output: 4309