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: 344 - 7553 + 7224 + 1616 + 672 + 916

Output: -2531


Input: Consider Input: 2036 + 7313 - 8908 - 1870 - 5159 + 5945 + 5006 + 635 + 5551

Output: -6477


Input: Consider Input: 3067 + 5176 - 2448 + 3537


Output: -3198