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: 8109 @ 8997 # 3310 # 8023 @ 2548 @ 9625 # 7170

Output: 10776


Input: Consider Input: 4282 @ 2191 # 7458 @ 8928

Output: 7943


Input: Consider Input: 7378 @ 826 @ 1612 @ 9041 @ 4819 # 883


Output: 22793