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: 8929 # 6145 @ 8551 # 1836 @ 9159

Output: 18658


Input: Consider Input: 7542 @ 5447 # 1409 # 4760 # 6595

Output: 225


Input: Consider Input: 2206 # 9956 @ 2943 # 8253 # 4998


Output: -18058