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:
7806 # 6020 # 4616 @ 3594 # 6312 # 5362 # 4403 @ 3666

Ex Output:
-11647


Ex Input:
4400 @ 9261 @ 3016

Ex Output:
16677


Ex Input:
2932 @ 4721 @ 5034 @ 672 @ 2260 # 1421 # 5262

Ex Output:

8936