PROGRAM-ID.                      ABC_100_D.
DATA                             DIVISION.
WORKING-STORAGE                  SECTION.
    01 N       PIC 9(4).
    01 M       PIC 9(4).

    01 INP     PIC X(38).
    01 a       PIC 9(4).
    01 b       PIC 9(4).
    01 x       PIC S9(11).
    01 y       PIC S9(11).
    01 z       PIC S9(11).

    01 mx      PIC 9(14).
    01 sm      PIC S9(14).

    01 ans     PIC X(14).

    01 c000_1.
        03 c000_11 OCCURS 1000 DEPENDING N.
            05 c000    PIC S9(11).

    01 c001_1.
        03 c001_11 OCCURS 1000 DEPENDING N.
            05 c001    PIC S9(11).

    01 c010_1.
        03 c010_11 OCCURS 1000 DEPENDING N.
            05 c010    PIC S9(11).

    01 c100_1.
        03 c100_11 OCCURS 1000 DEPENDING N.
            05 c100    PIC S9(11).

    01 c011_1.
        03 c011_11 OCCURS 1000 DEPENDING N.
            05 c011    PIC S9(11).

    01 c101_1.
        03 c101_11 OCCURS 1000 DEPENDING N.
            05 c101    PIC S9(11).

    01 c110_1.
        03 c110_11 OCCURS 1000 DEPENDING N.
            05 c110    PIC S9(11).

    01 c111_1.
        03 c111_11 OCCURS 1000 DEPENDING N.
            05 c111    PIC S9(11).

    01 cake000 PIC 9(14) VALUE ZERO.
    01 cake001 PIC 9(14) VALUE ZERO.
    01 cake010 PIC 9(14) VALUE ZERO.
    01 cake100 PIC 9(14) VALUE ZERO.
    01 cake011 PIC 9(14) VALUE ZERO.
    01 cake101 PIC 9(14) VALUE ZERO.
    01 cake110 PIC 9(14) VALUE ZERO.
    01 cake111 PIC 9(14) VALUE ZERO.

    01 ZS      PIC Z(14)9.
    01 DUMMY   PIC X(1).

    01 i       PIC 9(4) BINARY.

PROCEDURE                        DIVISION.
    ACCEPT INP.

    UNSTRING INP
    DELIMITED BY SPACE
    INTO N M.

    PERFORM VARYING i FROM 1 BY 1 UNTIL N < i
        ACCEPT INP

        UNSTRING INP
        DELIMITED BY SPACE
        INTO x y z

        COMPUTE sm = -x - y - z
        MOVE sm TO c000(i)

        COMPUTE sm = -x - y + z
        MOVE sm TO c001(i)

        COMPUTE sm = -x + y - z
        MOVE sm TO c010(i)

        COMPUTE sm = x - y - z
        MOVE sm TO c100(i)

        COMPUTE sm = -x + y + z
        MOVE sm TO c011(i)

        COMPUTE sm = x - y + z
        MOVE sm TO c101(i)

        COMPUTE sm = x + y - z
        MOVE sm TO c110(i)

        COMPUTE sm = x + y + z
        MOVE sm TO c111(i)

    END-PERFORM.

    SORT c000_11 DESCENDING c000.
    SORT c001_11 DESCENDING c001.
    SORT c010_11 DESCENDING c010.
    SORT c100_11 DESCENDING c100.
    SORT c011_11 DESCENDING c011.
    SORT c101_11 DESCENDING c101.
    SORT c110_11 DESCENDING c110.
    SORT c111_11 DESCENDING c111.

    PERFORM VARYING i FROM 1 BY 1 UNTIL M < i
       ADD c000(i) TO cake000
       ADD c001(i) TO cake001
       ADD c010(i) TO cake010
       ADD c100(i) TO cake100
       ADD c011(i) TO cake011
       ADD c101(i) TO cake101
       ADD c110(i) TO cake110
       ADD c111(i) TO cake111
    END-PERFORM.

    COMPUTE mx = FUNCTION MAX(cake000, cake001, cake010, cake100,
            cake011, cake101, cake110, cake111).

    MOVE mx TO ZS.

    PERFORM UNANS.

    DISPLAY ans(1:FUNCTION STORED-CHAR-LENGTH(ans)).
    STOP RUN.

UNANS                            SECTION.
    UNSTRING
        ZS DELIMITED BY ALL SPACE
        INTO DUMMY ans
    END-UNSTRING.


Measured memory_bytes: 760