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: 8967 + 529 - 1163 - 2651 + 7174 - 2929

Output: 8007


Input: Consider Input: 5161 + 8791 + 9352 + 7272 + 935 + 8632 + 1201

Output: -31022


Input: Consider Input: 5431 + 998 + 3566 + 4303 - 9222 + 8630 - 67 - 7377 + 994


Output: 3606