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: 4725 - 7780 + 1028 - 6858 + 9194 + 4680 - 3421 + 362 - 8573
Example Output: 16093

Example Input: 9060 + 6995 - 9090 + 8450 - 5246 + 5012
Example Output: 2939

Example Input: 1126 + 8326 - 4777 + 4573 + 6770
Example Output:
-13766