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: 1516 # 4681 # 225 # 3393 @ 1212 @ 367

Output: -5204


Input: Consider Input: 837 @ 118 @ 1503 # 3288 @ 6669 # 1394

Output: 4445


Input: Consider Input: 1297 @ 9891 # 6124


Output: 5064