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: 5992 @ 7637 # 7427 @ 1102 @ 677 @ 9685 @ 6972

Output: 24638


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

Output: -4353


Input: Consider Input: 2840 # 6154 # 5236 @ 7035 @ 4160 # 9567 @ 7071


Output: 149