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: 7746 - 2667 + 1801 - 5756 - 6076 - 6701 + 3002

Output: 24143


Input: Consider Input: 5162 - 4324 - 8160 + 9296 - 1881

Output: 10231


Input: Consider Input: 8121 - 5066 + 1037 - 6306 - 4492 + 7924 + 6573


Output: 8451