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: 6420 @ 6956 @ 9478 # 4046

Output: 18808


Input: Consider Input: 1067 @ 9683 @ 6600 # 6157 # 8258 # 8437


Output: -5502