example2-2.mps

NAME          
OBJSENSE
 MIN
ROWS
 N  obj
 L  c1
 L  c2
COLUMNS
    x1        c1        -1
    x1        c2        1
    x1        obj       -1
    x2        c1        1
    x2        c2        -3
    x2        obj       -2
    x3        c1        1
    x3        c2        1
    x3        obj       -3
RHS
    rhs       c1        20
    rhs       c2        30
BOUNDS
 UP bound     x1        40
ENDATA