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: 1070 @ 5674 @ 50 # 2252

Output: 4542


Input: Consider Input: 3309 @ 2855 @ 8458 # 3671 # 4410 # 6229 # 4661 # 2777

Output: -7126


Input: Consider Input: 7932 # 4603 # 5585 @ 8998


Output: 6742