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:
7803 @ 6524 @ 7077 # 1627 # 3959

Ex Output:
15818


Ex Input:
1482 # 6461 @ 804 # 8626 # 8564

Ex Output:
-21365


Ex Input:
2059 @ 7359 @ 2330 @ 6290 # 6090 # 9732 # 7165 @ 2531 @ 7670

Ex Output:

5252