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: 7746 - 2667 + 1801 - 5756 - 6076 - 6701 + 3002

Output: 24143


Input: Consider Input: 7555 + 8285 + 7132 + 9363 - 3515

Output: -13710


Input: Consider Input: 3794 + 9490 + 6968 + 2273 + 7918 + 8472 - 9262 + 9379


Output: -31444