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

Example Input: 7217 @ 2604 @ 9974 @ 8133 @ 8987 # 6381 # 7662
Example Output: 22872

Example Input: 6199 # 9863 # 8197 # 3975 @ 1000 @ 740 @ 3216 @ 2122 # 4226
Example Output: -12984

Example Input: 6398 @ 9050 # 237 # 5631 @ 5599 # 4022 # 3914
Example Output:
7243