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: 4647 - 2106 + 6760 + 3296 - 9772

Output: 6469


Input: Consider Input: 3284 - 2372 - 6880

Output: 12536


Input: Consider Input: 4423 + 5810 + 6116 - 5326 + 2240 - 1892 - 8236 + 1166


Output: 4545