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: 1753 # 4314 @ 3538 # 7342 @ 6326 @ 6393 @ 136 @ 161 @ 4337

Output: 10988


Input: Consider Input: 4899 # 3034 @ 3351 @ 7952 @ 4527 # 2700 # 3143 @ 3642 # 2445

Output: 13049


Input: Consider Input: 4240 @ 8736 # 7091 @ 1045 # 4460 @ 737 # 7089 @ 5892


Output: 2010