Maximize 
+ 0.27971086 x1 - 0.054219407 x2 - 0.024812156 x3 - 0.024812156 x4 - 0.18986834 x5 - 0.32661576 x6 + 0.30180411 x7 - 0.49719559 x8 

Subject To 
x1 - x2 >= 0 
x1 - x3 >= 0 
x2 - x4 >= 0 
x3 - x4 >= 0 
x2 - x5 >= 0 
x3 - x5 >= 0 
x2 - x6 >= 0 
x3 - x7 >= 0 
x1 - x8 >= 0 
x4 - x8 >= 0 

Bounds 
0 <= x1 <= 1 
0 <= x2 <= 1 
0 <= x3 <= 1 
0 <= x4 <= 1 
0 <= x5 <= 1 
0 <= x6 <= 1 
0 <= x7 <= 1 
0 <= x8 <= 1 

end 
