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.

138 + 3973 - 6085 - 3324 + 6921 + 4411 + 1113 + 8310
-15181

2537 - 3199 + 5925 + 8172 + 3564 + 8810
-20735

4261 - 140 + 4266 + 456 - 4096 - 7876

11651