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:
5027 @ 4058 # 8225 @ 9216 # 3101 @ 8259 # 2376 # 6826 # 8997

Ex Output:
-2965


Ex Input:
5507 @ 4243 @ 5897 @ 7115 # 6687 @ 3875 # 298 @ 1379 @ 1973

Ex Output:
23004


Ex Input:
2262 # 1254 # 2348 @ 836 @ 291 @ 519 # 4151 # 2406

Ex Output:

-6251