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: 8455 + 5516 - 2131 + 6151 + 6314 + 9308 + 5493

Output: -22196


Input: Consider Input: 5113 - 8987 - 452

Output: 14552


Input: Consider Input: 768 + 5501 - 7336 + 5927 - 1173 - 5115 + 1595 + 2819 + 6232


Output: -7682