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: 7211 # 614 @ 1584 # 4857 # 1495 # 1821 # 2219

Output: -2211


Input: Consider Input: 5031 # 649 # 8975 @ 1853 # 5257 # 1383

Output: -9380


Input: Consider Input: 7959 # 360 # 8441 # 9465 @ 2793 # 7655 @ 5051 @ 2276 @ 2642


Output: -5200