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: 8842 @ 3530 @ 7537

Output: 19909


Input: Consider Input: 6467 # 8145 # 9388 # 9232

Output: -20298


Input: Consider Input: 8754 @ 2969 # 9895 # 8360


Output: -6532


