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: 1737 + 1422 + 9162 - 7244 + 6133

Output: -7736


Input: Consider Input: 9096 - 7913 + 7375 + 7790

Output: 1844


Input: Consider Input: 232 + 8414 - 4647


Output: -3535