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: 395 - 3060 - 445 + 3450 + 3365

Output: -2915


Input: Consider Input: 2131 + 4513 + 3760 - 9342 + 7779 + 4653 + 3111

Output: -12343


Input: Consider Input: 5644 - 2923 + 4185 + 7918 + 8213 + 3976 - 7012 + 1860


Output: -10573