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: 2497 # 4988 @ 8200 # 3896 @ 5601 @ 1004
Example Output: 8418

Example Input: 4867 # 7162 @ 1616 # 596 # 7845 @ 9594 # 3650 @ 6833
Example Output: 3657

Example Input: 2163 # 3187 @ 4654
Example Output:
3630