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: 9807 @ 9345 # 5133 # 8042 @ 1499 # 8153 # 638

Output: -1315


Input: Consider Input: 3363 @ 4009 @ 5612 # 7774 @ 1547 @ 531 @ 9025 @ 3155 # 3948

Output: 15520


Input: Consider Input: 1448 @ 337 # 5225 # 4832 @ 2952 @ 7453


Output: 2133