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:
7371 # 9025 @ 8352 # 9201 # 9297 # 3561 @ 8576

Ex Output:
-6785


Ex Input:
5249 @ 1204 # 3908 # 5196 @ 1711 @ 8089 # 8419 # 2865 @ 1478

Ex Output:
-2657


Ex Input:
5800 @ 1091 @ 6451 @ 8446 # 854 @ 2893 @ 9390

Ex Output:

33217