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: 2057 # 2330 # 9059 # 2713 # 7404 @ 4349

Output: -15100


Input: Consider Input: 8842 @ 3530 @ 7537

Output: 19909


Input: Consider Input: 7539 @ 9207 # 2938 @ 8942 @ 6293 # 563


Output: 28480