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: 2186 # 2436 # 4269 # 2175 @ 4101 # 2723 @ 6192 # 7530

Output: -6654


Input: Consider Input: 9582 @ 3554 @ 1044 @ 880 # 6787 # 6161

Output: 2112


Input: Consider Input: 3778 # 973 @ 6976 # 5652 # 6735 @ 3907 # 1863 # 1996


Output: -2558