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

Input: Consider Input: 6597 @ 1596 # 358 # 9057 @ 993

Output: -229


Input: Consider Input: 3876 @ 6607 # 1034 # 2483 @ 544 # 1053 @ 4907 @ 1303 @ 3904

Output: 16571


Input: Consider Input: 5272 @ 8198 # 8857 @ 3919 # 2898 # 8618


Output: -2984