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: 4203 - 2197 - 5419 - 9369 + 4447 - 2386 - 94

Output: 19221


Input: Consider Input: 2862 - 964 + 1644

Output: 2182


Input: Consider Input: 2790 + 783 - 3296 - 6461 + 9538 - 6285 + 4067 + 9734


Output: -5290