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:
9913 # 5573 @ 4921 # 723 # 9487 # 754 # 1667 @ 5543 @ 6626

Ex Output:
8799


Ex Input:
6055 # 7226 @ 1875 @ 7504 # 1238 # 4445 @ 412 # 5560

Ex Output:

-2623