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:
4130 @ 6495 # 3973

Ex Output:
6652


Ex Input:
9248 # 9080 @ 3314 # 1458

Ex Output:
2024


Ex Input:
6390 @ 4138 @ 2478 # 2353 # 4642 # 2361 @ 814 # 4203 @ 3590

Ex Output:

3851