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

Output: -2531


Input: Consider Input: 7291 - 941 - 33 + 3812 + 4851 - 8716 - 6838 - 740

Output: 15896


Input: Consider Input: 9629 + 3687 + 328


Output: 5614