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: 1718 # 8860 # 9652

Output: -16794


Input: Consider Input: 473 # 2568 @ 9771 # 2525 @ 3277 @ 261 # 8230 @ 6021

Output: 6480


Input: Consider Input: 6337 @ 5944 @ 3110 @ 1997 # 3512 @ 5647 # 7223 # 3255 # 3570


Output: 5475