! 消防車調度
Min   	36x12+24x11+49x14+21x13+81x17+72x16+45x15
       +30x22+20x21+56x24+24x23+99x27+88x26+55x25
       +36x32+24x31+63x34+27x33+90x37+80x36+50x35
SUBJECT TO
	x11+x12+x13+x14+x15+x16+x17 = 3
        x21+x22+x23+x24+x25+x26+x27 = 2
        x31+x32+x33+x34+x35+x36+x37 = 2
	x11+x21+x31 =1 
 	x12+x22+x32 =1 
  	x13+x23+x33 = 1 
	x14+x24+x34 =1 
 	x15+x25+x35 =1 
  	x16+x26+x36 = 1 
  	x17+x27+x37 = 1  
	X22 - X21 <= 0
        X14 - X13 <=0
 	X24 - X23 - X13 <=0
	X16 - X15 <= 0
	X17 - X16 <=0
	X36 - X15 - X35 <=0
	2X37 -X15 -X16 -X35 -X36 <=0
END  
! INT 21