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: 2560 @ 144 @ 6785 @ 572 # 5190 @ 1929

Output: 6800


Input: Consider Input: 2448 @ 5284 # 6313 @ 7761 @ 4601 @ 6800

Output: 20581


Input: Consider Input: 2088 @ 3514 # 9030 @ 9964 # 4877 @ 8220 # 1284 # 1547


Output: 7048


