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.

Ex Input:
3782 + 4127 - 1265 - 1395 + 2430 + 6990 + 8573 + 8170

Ex Output:
-23848

Ex Input:
5335 + 8307 + 4845 + 6853 - 9847 + 7289

Ex Output:
-12112

Ex Input:
5673 - 2899 - 6087 + 5094

Ex Output:
9565