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:
8197 @ 9504 @ 5465 # 6573 @ 8964 @ 6026

Ex Output:
31583


Ex Input:
9786 @ 7240 # 8099 @ 100 @ 4573 @ 5982 @ 9270 @ 9911 # 8249

Ex Output:
30514


Ex Input:
5853 @ 8563 # 8877 # 5555 @ 7630 # 9515 @ 509 # 2251 @ 5871

Ex Output:

2228