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: 2377 @ 4500 # 8359 @ 9946 # 9011

Output: -547


Input: Consider Input: 2049 @ 2399 @ 6115 # 6526 @ 3808 # 4903 @ 6033 @ 8161


Output: 17136