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:
1122 @ 3359 @ 4856 # 8802 @ 600 @ 3512 # 4067 @ 6320 @ 711

Ex Output:
7611


Ex Input:
9566 # 6244 @ 3039 # 947 # 6321 @ 7732

Ex Output:
6825


Ex Input:
3603 # 9782 @ 4129 # 1660 @ 8334

Ex Output:

4624