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.

Ex Input:
3112 - 4832 - 7889 - 6855 - 5294 - 5908 + 9757 - 9064

Ex Output:
33197

Ex Input:
2367 + 2751 + 138 + 6347 + 5297

Ex Output:
-12166

Ex Input:
5253 + 2450 + 1316 + 9889 + 6449 + 4948

Ex Output:
-19799