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

Input: Consider Input: 9879 # 8585 @ 4078 # 6210 @ 7239 @ 3002 # 2455 @ 9817

Output: 16765


Input: Consider Input: 5052 # 6923 @ 1011

Output: -860


Input: Consider Input: 3878 # 6610 # 7375 # 1174 @ 1974


Output: -9307