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:
1188 @ 3127 @ 964 # 79 # 4554 @ 4344 @ 8024

Ex Output:
13014


Ex Input:
808 # 5395 # 5187 @ 8140 @ 2751 @ 1624 # 2083 @ 6224 # 8604

Ex Output:
-1722


Ex Input:
8985 @ 1522 # 6372 @ 2613 # 4786

Ex Output:

1962