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: 7152 @ 8957 # 8060 # 3668 # 8713 # 9420 # 3603

Output: -17355


Input: Consider Input: 1855 # 9818 @ 3927 @ 9533 # 8557 @ 619 # 7543 # 2844

Output: -12828


Input: Consider Input: 2015 # 304 # 8021 # 1494 @ 6502 # 9274


Output: -10576