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: 86 - 2166 - 8519 - 7184 - 362 - 2203 + 1579 - 1133 + 3978

Output: 16096


Input: Consider Input: 1943 + 6084 + 8719 + 2400 + 8595 - 7077 + 1264

Output: -18042


Input: Consider Input: 6015 - 3088 + 9417 - 9931


Output: 9617