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: 540 @ 8823 @ 1244 # 1696 # 889 # 6035 # 5113 @ 2513

Output: -613


Input: Consider Input: 4364 # 2781 # 7674 # 4801 @ 898 @ 7562 @ 5925 @ 648 @ 7768

Output: 11909


Input: Consider Input: 4742 # 1654 @ 9640 # 7461 # 5474 @ 2105 @ 5256


Output: 7154