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.

Example Input: 1678 - 831 + 1988 - 3248 - 7672 + 8515 + 5236 - 2764 - 6078
Example Output: 6532

Example Input: 5335 + 8307 + 4845 + 6853 - 9847 + 7289
Example Output: -12112

Example Input: 4214 + 6564 - 6129 + 1877 - 3755 - 127
Example Output:
5784