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: 2480 - 8716 + 5571 - 504 - 4905 - 392 - 5105 + 906

Output: 15625


Input: Consider Input: 7528 - 4788 + 7674 + 4839 + 6930 + 4883 + 9734

Output: -21744


Input: Consider Input: 7847 - 4192 - 6037 + 2198 - 5974 + 5997 + 6115


Output: 9740