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: 1774 # 6033 # 3757 @ 3570 @ 6463 # 5537

Output: -3520


Input: Consider Input: 5274 @ 8123 @ 5544 @ 7060 # 1023

Output: 24978


Input: Consider Input: 5383 @ 4348 @ 9281 # 205 @ 6788 # 5650


Output: 19945