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: 5425 @ 6980 # 4301 @ 4410 # 7405 # 552 @ 4556 # 8531 # 4935

Output: -4353


Input: Consider Input: 5513 @ 1221 @ 8910 @ 8422

Output: 24066


Input: Consider Input: 3675 # 731 # 9809 @ 5387 # 925 @ 1523 @ 4377


Output: 3497