In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Input: Consider Input: 6492 - 3901 + 3666 + 9196 - 3917 - 133

Output: 1581


Input: Consider Input: 4117 - 3380 - 4784

Output: 12281


Input: Consider Input: 6896 + 2357 - 500 - 9139 - 1143 - 5227 - 6497 + 3849


Output: 23196