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: 4787 # 6151 # 6235

Output: -7599


Input: Consider Input: 5347 # 326 # 6112 # 4655 @ 2124

Output: -3622


Input: Consider Input: 1834 # 3183 # 9924 # 98


Output: -11371