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: 9546 @ 5515 @ 6740 # 2069 # 921 # 9110 # 5067 # 3917 # 6434

Output: -5717


Input: Consider Input: 4189 # 3579 @ 7275 # 5186 @ 5825 # 3209

Output: 5315


Input: Consider Input: 9817 @ 5042 # 1724 @ 799 @ 685


Output: 14619