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: 3385 - 6152 + 1565 - 9813 - 5112 - 2865 + 2979

Output: 22783


Input: Consider Input: 6946 + 6834 - 1169 + 9756 + 2063 - 4750 - 425 + 1121 + 8155

Output: -14639


Input: Consider Input: 8192 + 7623 + 6333


Output: -5764