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: 452 # 5631 # 8307 # 1886 @ 4631 @ 1695 @ 4411 # 769

Output: -5404


Input: Consider Input: 9913 # 5573 @ 4921 # 723 # 9487 # 754 # 1667 @ 5543 @ 6626

Output: 8799


Input: Consider Input: 5162 @ 3997 # 5284


Output: 3875