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: 9864 - 5325 - 3230 - 5129 + 7733 + 3498 - 9250

Output: 21567


Input: Consider Input: 7591 + 2427 + 6553 + 4047 - 9300 + 2235 + 7278

Output: -5649


Input: Consider Input: 2105 - 6835 + 6437 - 5582 + 7185 - 1237


Output: 2137