read c / rows=4 cols=1
0.75
-20
0.5
-6
read A / Rows=3 cols=4
0.25  -8  -1    9
0.5  -12  -0.5  3
0     0    1    0
read b / rows=3 cols=1
1
2
3
lp c A b / primal=x dual=y pslack=u dslack=v iter=50
print x y u v
stop