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: 8079 @ 5498 @ 5803 @ 711 # 9604 @ 7533

Output: 18020


Input: Consider Input: 8451 # 7523 @ 454 @ 459 @ 182 @ 6187 # 2835

Output: 5375


Input: Consider Input: 2122 # 7946 # 5906 @ 1561 # 8408 # 5737 # 7638 @ 9717 # 4497


Output: -26732