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: 5778 - 5516 - 1453 + 7326 - 5703

Output: 11124


Input: Consider Input: 5355 + 1451 - 3895 + 6213 + 743

Output: 843


Input: Consider Input: 7716 + 6322 + 6665 - 1281 + 1377 + 3345 + 8318


Output: -17030