IDENTIFICATION                   DIVISION.
PROGRAM-ID.                      ABC_099_A.
ENVIRONMENT                      DIVISION.
DATA                             DIVISION.
PROCEDURE                        DIVISION.
MAIN.
    ACCEPT N FROM CONSOLE.
    IF 999 < N THEN
        DISPLAY "ABD" UPON CONSOLE
    ELSE
        DISPLAY "ABC" UPON CONSOLE
    END-IF.
    STOP RUN.
