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: 8802 - 6452 - 1721 - 4775 + 1838 + 4933 + 9964 - 6909

Output: 11924


Input: Consider Input: 6492 - 3901 + 3666 + 9196 - 3917 - 133

Output: 1581


Input: Consider Input: 7258 - 2237 + 9097 + 9882 + 5496


Output: -14980