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: 7982 # 9393 @ 981 @ 2884 # 1556 @ 752 # 322 # 3235

Output: -1907


Input: Consider Input: 2132 @ 8398 # 9269

Output: 1261


Input: Consider Input: 3921 # 7756 # 4482 @ 4134


Output: -4183