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: 9806 @ 7051 @ 6703 @ 4233 # 276
Example Output: 27517

Example Input: 581 # 2278 @ 452 # 5411 # 7564 @ 8148 # 2350 # 8956 # 4877
Example Output: -22255

Example Input: 1107 @ 9957 @ 3044 @ 3999 # 9003 # 1965 # 2472 # 5067
Example Output:
-400