* Problem:    sample
* Rows:       3
* Columns:    3
* Non-zeros:  12
*
NAME          sample
ROWS
 N  R______0
 L  p
 L  q
 L  r
COLUMNS
    x1        R______0           -10   r                    2
              q                   10   p                    1
    x2        R______0            -6   r                    2
              q                    4   p                    1
    x3        R______0            -4   r                    6
              q                    5   p                    1
RHS
              p                  100   q                  600
              r                  300
ENDATA