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: 3249 @ 313 @ 7029 @ 5721 @ 7626

Output: 23938


Input: Consider Input: 3275 # 8948 # 7571 @ 9566 @ 9874 @ 3226

Output: 9422


Input: Consider Input: 4284 @ 7581 # 9849 # 9330 @ 1704 # 9623


Output: -15233