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:
4101 @ 2536 # 502

Ex Output:
6135


Ex Input:
5610 # 3034 @ 9312 @ 7337 @ 2731 @ 8581 @ 5926 # 2102 @ 2137

Ex Output:
36498


Ex Input:
6328 # 2639 @ 7730

Ex Output:

11419