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:
1077 @ 2451 @ 9445 @ 1297 @ 2639 # 27 # 9331 @ 8713

Ex Output:
16264


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

Ex Output:
25481


Ex Input:
9983 @ 4289 # 604 # 631 # 4079 @ 3827 @ 2519 # 179 @ 2331

Ex Output:

17456