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: 1953 - 3854 - 1362 + 6267 - 3664 - 901 + 7969 + 111

Output: -2613


Input: Consider Input: 395 - 3060 - 445 + 3450 + 3365

Output: -2915


Input: Consider Input: 2270 - 1507 - 8383 - 2507


Output: 14667