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: 8698 # 7378 # 9188 @ 5767 # 2935 # 2532 @ 7113

Output: -455


Input: Consider Input: 2354 @ 5192 @ 5717 # 1833 @ 9672 # 3565

Output: 17537


Input: Consider Input: 675 # 421 @ 4259 # 223 # 2887 @ 3739 @ 1998


Output: 7140