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: 6603 - 3783 + 3030 - 5787 + 8478 + 3046 - 1629

Output: 3248


Input: Consider Input: 8247 - 6987 - 8915 - 9962

Output: 34111


Input: Consider Input: 3438 - 3865 - 956 - 3020 + 2696


Output: 8583