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: 2821 @ 5327 # 3350 # 3607 @ 7010 @ 6824 # 9975 # 38

Output: 5012


Input: Consider Input: 4899 # 3034 @ 3351 @ 7952 @ 4527 # 2700 # 3143 @ 3642 # 2445

Output: 13049


Input: Consider Input: 3 # 8608 # 8848 @ 4633


Output: -12820