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: 5161 + 8791 + 9352 + 7272 + 935 + 8632 + 1201

Output: -31022


Input: Consider Input: 1928 - 8869 + 937 + 6209 + 5391 - 5357 + 6743

Output: -3126


Input: Consider Input: 1714 + 3920 - 5663 + 9293 - 4671 + 7099 + 682 - 6163 - 6211


Output: 3428