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: 5175 # 1386 # 5328 # 898 @ 5361 # 376 @ 1286 @ 861

Output: 4695


Input: Consider Input: 6844 @ 1340 # 4174 # 5664 @ 4911 # 5241

Output: -1984


Input: Consider Input: 4504 # 7484 # 3324 @ 7539 @ 242 # 7802 @ 1679


Output: -4646