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:
8172 @ 6594 # 2768 # 40 @ 9214 @ 3626

Ex Output:
24798


Ex Input:
1278 @ 4628 @ 2357 @ 3694 @ 5775 @ 8542 # 793

Ex Output:
25481


Ex Input:
7425 @ 1035 # 4807 @ 2410 # 3433 @ 2811

Ex Output:

5441