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

Ex Input:
7027 @ 2812 @ 3081 @ 8945 # 18 # 3273 @ 222 # 6452 # 5838

Ex Output:
6506

Ex Input:
1077 @ 2451 @ 9445 @ 1297 @ 2639 # 27 # 9331 @ 8713

Ex Output:
16264

Ex Input:
3619 @ 5149 @ 1127 # 6238

Ex Output:
3657