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: 6820 - 387 + 8290 - 9203 - 9292 + 9249 - 3079

Output: 11242


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

Output: 8007


Input: Consider Input: 5726 + 1014 - 129


Output: 4841