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: 7775 # 9805 # 8727
Example Output: -10757

Example Input: 5249 @ 1204 # 3908 # 5196 @ 1711 @ 8089 # 8419 # 2865 @ 1478
Example Output: -2657

Example Input: 1769 # 4849 @ 4291 @ 1317 @ 1319
Example Output:
3847