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: 3347 # 2950 @ 6671 @ 4670 # 7283

Output: 4455


Input: Consider Input: 2339 @ 2821 # 2234 @ 1271 @ 471

Output: 4668


Input: Consider Input: 7395 @ 6095 # 9304 # 7955 @ 8141 # 6015 @ 2016


Output: 373