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: 2036 # 2136 @ 2740 # 8018 # 8379 @ 5952 # 3539 # 1201 # 5870
Example Output: -18415

Example Input: 2269 # 7857 @ 1906 @ 1098 # 6308 # 1142 @ 2063
Example Output: -7971

Example Input: 2502 @ 2601 # 70 # 401 @ 5943 # 7899 # 5179
Example Output:
-2503