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:
4100 @ 4500 @ 5166 @ 7442 @ 3258

Ex Output:
24466


Ex Input:
4470 @ 7285 # 4583 @ 9451 # 3236 # 3108 # 2875

Ex Output:
7404


Ex Input:
9802 @ 8269 # 8728 # 16 # 7228 @ 6442 @ 6255

Ex Output:

14796