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: 4101 @ 2536 # 502

Output: 6135


Input: Consider Input: 8172 @ 6594 # 2768 # 40 @ 9214 @ 3626

Output: 24798


Input: Consider Input: 3499 # 2496 # 8559 @ 8652 @ 3011


Output: 4107