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: 3367 # 4567 @ 8786 @ 9643 @ 105 # 6364 @ 9695 # 2387 @ 8798

Output: 27076


Input: Consider Input: 427 # 7974 # 7564 @ 2404 # 4955 # 1239 # 1518 @ 906

Output: -19513


Input: Consider Input: 6168 # 7611 # 3466 # 2650


Output: -7559