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: 290 @ 5200 # 3274 # 8548

Output: -6332


Input: Consider Input: 353 # 9525 @ 9923 @ 4025 # 1922 @ 4751

Output: 7605


Input: Consider Input: 9735 @ 3383 # 9521


Output: 3597