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: 7211 # 614 @ 1584 # 4857 # 1495 # 1821 # 2219

Output: -2211


Input: Consider Input: 8238 @ 9817 # 2474 @ 3673 @ 9625 # 849 @ 1441

Output: 29471


Input: Consider Input: 8676 @ 9451 # 8121 @ 512 # 8132 @ 9017 @ 7324 @ 7055


Output: 25782