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: 9467 + 7102 - 1964

Output: 4329


Input: Consider Input: 344 - 7553 + 7224 + 1616 + 672 + 916

Output: -2531


Input: Consider Input: 5378 + 1839 + 6271 + 5704


Output: -8436