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

Ex Output:
8799


Ex Input:
3007 @ 8777 # 8750

Ex Output:
3034


Ex Input:
329 @ 4014 @ 370 # 3805 @ 1463 # 5353 @ 5305 @ 7981

Ex Output:

10304