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:
2588 @ 7474 @ 7336 @ 2767 # 1155 # 3435 # 6693

Ex Output:
8882


Ex Input:
4681 # 7765 @ 9516 @ 4570 @ 2862

Ex Output:
13864


Ex Input:
6369 # 8680 @ 5871 # 612 @ 1625

Ex Output:

4573