<>MODEL:
SETS:
YEAR/Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8/:Y;
XB/X1 X2 X3 X4 X5 X6 X7 X8 X9/:X;
LINKS(YEAR,XB):A,C;
ENDSETS
!THE OBJECT;
MIN=C1+C2+C3+C4+C5+C6+C7+C8+C9;
@SUM(LINKS(I,J):A(J)*X(J,I))-0.5*@SUM(LINKS(I,J):C(J)*X(J,I))<=Y(j);
@SUM(LINKS(I,J):A(J)*X(J,I))+0.5*@SUM(LINKS(I,J):C(J)*X(J,I))>=Y(j));
DATA:
Y=4514 4748 5350 5519 5617 5929 5999 6121;
X=6 90 2110 21308 2741 8691 760 78 2110
6 100 2212 22699 3007 9138 775 83 2212
6 108 2307 26387 3473 9882 785 88 2307
6 114 2447 29823 4007 9676 796 91 2447
6 115 2598 33598 4465 10159 805 108 2598
6 117 2815 38601 4897 11565 815 126 2901
7 152 3013 45743 5725 12885 829 114 3109
7 160 3153 51893 6365 10432 839 136 3253
ENDDATA
END
可是不知道哪儿出错了!对@sum的用法不清楚。</P><>哪位大虾指点一下,不胜感激!!</P> |