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: 6374 # 6362 # 4384 @ 4744 @ 8116 # 1470

Output: 7018


Input: Consider Input: 3347 # 2950 @ 6671 @ 4670 # 7283

Output: 4455


Input: Consider Input: 642 # 7863 @ 855 @ 3909 @ 4474 # 9340 # 6976 # 7034 @ 2816


Output: -18517