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: 8441 @ 2924 # 9024 @ 6661 @ 7034 # 4821 # 4921

Output: 6294


Input: Consider Input: 7152 @ 8957 # 8060 # 3668 # 8713 # 9420 # 3603

Output: -17355


Input: Consider Input: 5576 # 1270 @ 6240 # 4630 @ 2615 @ 8413


Output: 16944