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:
2095 # 5428 @ 3055 @ 1752 @ 2919 # 3592 # 7407

Ex Output:
-6606


Ex Input:
2020 @ 8125 # 252 # 2790 # 9183 @ 3123 # 7282 # 5115 # 1943

Ex Output:
-13297


Ex Input:
7533 @ 2213 # 7566 @ 455 # 6321 # 2480 @ 1023 @ 2407

Ex Output:

-2736