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: 7272 @ 8958 # 7231 @ 6616

Output: 15615


Input: Consider Input: 4449 @ 4019 @ 7637

Output: 16105


Input: Consider Input: 5905 @ 5109 # 5861 # 9787 @ 386 @ 9628 # 3644 # 5345 @ 7068


Output: 3459