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: 5444 + 2542 - 6861 + 2740 - 4508 + 478 - 1138 + 7229

Output: 4962


Input: Consider Input: 7646 + 8509 - 4372 - 9840 - 6377 - 2924 + 869

Output: 21781


Input: Consider Input: 7153 - 2033 - 6101 - 7687 - 8387 + 3150 - 5516 + 1281


Output: 32446