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: 1439 @ 4809 @ 6755 # 4840 @ 491 @ 9049 @ 8905 @ 8915

Output: 35523


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

Output: 15520


Input: Consider Input: 451 # 6276 # 6482 @ 8801 # 5702 @ 4518 # 634


Output: -5324