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:
7534 @ 7329 # 2862 # 947 @ 8590 @ 4064

Ex Output:
23708


Ex Input:
6060 @ 2846 @ 4249 @ 6831 @ 5191 @ 3711 # 352 # 2921 @ 5640

Ex Output:
31255


Ex Input:
4660 @ 6036 # 3592 # 775

Ex Output:

6329