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: 4688 # 4301 # 9301 # 7246 # 6377 @ 8027 @ 425 @ 3557

Output: -10528


Input: Consider Input: 2020 @ 862 # 5780

Output: -2898


Input: Consider Input: 9083 # 9104 # 4442 # 9760 @ 4041 @ 1750 @ 49 @ 4121


Output: -4262