A(10) - Called.
A(10) calling B(9).
B(9) - Called.
B(9) calling A(8).
A(8) - Called.
A(8) calling B(7).
B(7) - Called.
B(7) calling A(6).
A(6) - Called.
A(6) calling B(5).
B(5) - Called.
B(5) calling A(4).
A(4) - Called.
A(4) calling B(3).
B(3) - Called.
B(3) calling A(2).
A(2) - Called.
A(2) calling B(1).
B(1) - Called.
B(1) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(1) returns true.
B(1) returned true, so A(2) is continuing.
A(2) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(2) returns true.
A(2) returned true, so B(3) is continuing.
B(3) calling A(1).
A(1) - Called.
A(1) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(1) returns true.
A(1) returned true, so B(3) is continuing.
B(3) - Returning false.
B(3) returned false, so A(4) returns true.
A(4) returned true, so B(5) is continuing.
B(5) calling A(3).
A(3) - Called.
A(3) calling B(2).
B(2) - Called.
B(2) calling A(1).
A(1) - Called.
A(1) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(1) returns true.
A(1) returned true, so B(2) is continuing.
B(2) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(2) returns true.
B(2) returned true, so A(3) is continuing.
A(3) calling B(1).
B(1) - Called.
B(1) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(1) returns true.
B(1) returned true, so A(3) is continuing.
A(3) - Returning false.
A(3) returned false, so B(5) returns true.
B(5) returned true, so A(6) is continuing.
A(6) calling B(4).
B(4) - Called.
B(4) calling A(3).
A(3) - Called.
A(3) calling B(2).
B(2) - Called.
B(2) calling A(1).
A(1) - Called.
A(1) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(1) returns true.
A(1) returned true, so B(2) is continuing.
B(2) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(2) returns true.
B(2) returned true, so A(3) is continuing.
A(3) calling B(1).
B(1) - Called.
B(1) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(1) returns true.
B(1) returned true, so A(3) is continuing.
A(3) - Returning false.
A(3) returned false, so B(4) returns true.
B(4) returned true, so A(6) is continuing.
A(6) - Returning false.
A(6) returned false, so B(7) returns true.
B(7) returned true, so A(8) is continuing.
A(8) calling B(6).
B(6) - Called.
B(6) calling A(5).
A(5) - Called.
A(5) calling B(4).
B(4) - Called.
B(4) calling A(3).
A(3) - Called.
A(3) calling B(2).
B(2) - Called.
B(2) calling A(1).
A(1) - Called.
A(1) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(1) returns true.
A(1) returned true, so B(2) is continuing.
B(2) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(2) returns true.
B(2) returned true, so A(3) is continuing.
A(3) calling B(1).
B(1) - Called.
B(1) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(1) returns true.
B(1) returned true, so A(3) is continuing.
A(3) - Returning false.
A(3) returned false, so B(4) returns true.
B(4) returned true, so A(5) is continuing.
A(5) calling B(3).
B(3) - Called.
B(3) calling A(2).
A(2) - Called.
A(2) calling B(1).
B(1) - Called.
B(1) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(1) returns true.
B(1) returned true, so A(2) is continuing.
A(2) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(2) returns true.
A(2) returned true, so B(3) is continuing.
B(3) calling A(1).
A(1) - Called.
A(1) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(1) returns true.
A(1) returned true, so B(3) is continuing.
B(3) - Returning false.
B(3) returned false, so A(5) returns true.
A(5) returned true, so B(6) is continuing.
B(6) calling A(4).
A(4) - Called.
A(4) calling B(3).
B(3) - Called.
B(3) calling A(2).
A(2) - Called.
A(2) calling B(1).
B(1) - Called.
B(1) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(1) returns true.
B(1) returned true, so A(2) is continuing.
A(2) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(2) returns true.
A(2) returned true, so B(3) is continuing.
B(3) calling A(1).
A(1) - Called.
A(1) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(1) returns true.
A(1) returned true, so B(3) is continuing.
B(3) - Returning false.
B(3) returned false, so A(4) returns true.
A(4) returned true, so B(6) is continuing.
B(6) - Returning false.
B(6) returned false, so A(8) returns true.
A(8) returned true, so B(9) is continuing.
B(9) calling A(7).
A(7) - Called.
A(7) calling B(6).
B(6) - Called.
B(6) calling A(5).
A(5) - Called.
A(5) calling B(4).
B(4) - Called.
B(4) calling A(3).
A(3) - Called.
A(3) calling B(2).
B(2) - Called.
B(2) calling A(1).
A(1) - Called.
A(1) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(1) returns true.
A(1) returned true, so B(2) is continuing.
B(2) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(2) returns true.
B(2) returned true, so A(3) is continuing.
A(3) calling B(1).
B(1) - Called.
B(1) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(1) returns true.
B(1) returned true, so A(3) is continuing.
A(3) - Returning false.
A(3) returned false, so B(4) returns true.
B(4) returned true, so A(5) is continuing.
A(5) calling B(3).
B(3) - Called.
B(3) calling A(2).
A(2) - Called.
A(2) calling B(1).
B(1) - Called.
B(1) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(1) returns true.
B(1) returned true, so A(2) is continuing.
A(2) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(2) returns true.
A(2) returned true, so B(3) is continuing.
B(3) calling A(1).
A(1) - Called.
A(1) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(1) returns true.
A(1) returned true, so B(3) is continuing.
B(3) - Returning false.
B(3) returned false, so A(5) returns true.
A(5) returned true, so B(6) is continuing.
B(6) calling A(4).
A(4) - Called.
A(4) calling B(3).
B(3) - Called.
B(3) calling A(2).
A(2) - Called.
A(2) calling B(1).
B(1) - Called.
B(1) calling A(0).
A(0) - Called.
A(0) - Returning false.
A(0) returned false, so B(1) returns true.
B(1) returned true, so A(2) is continuing.
A(2) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(2) returns true.
A(2) returned true, so B(3) is continuing.
B(3) calling A(1).
A(1) - Called.
A(1) calling B(0).
B(0) - Called.
B(0) - Returning false.
B(0) returned false, so A(1) returns true.
A(1) returned true, so B(3) is continuing.
B(3) - Returning false.
B(3) returned false, so A(4) returns true.
A(4) returned true, so B(6) is continuing.
B(6) - Returning false.
B(6) returned false, so A(7) returns true.
A(7) returned true, so B(9) is continuing.
B(9) - Returning false.
B(9) returned false, so A(10) returns true.
Alice