求解鸡只最优销售方案
题目如图所示，如何求解，请大神帮忙看看用LINGO尝试了一些，能得到一个局部最优的解。SETS:
CHICKEN/ 1..35/: M;
GROUP / 1..35/: W, N, H, P;
CXG( CHICKEN, GROUP): G;
ENDSETS
@FOR( CHICKEN( I): @FOR( GROUP( J): @BIN( G( I, J))));
@FOR( CHICKEN( I): @SUM( GROUP( J): G( I, J)) = 1);
@FOR( GROUP ( J): N( J) = @SUM( CHICKEN( I): G( I, J)));
@FOR( GROUP ( J): H( J) = @SUM( CHICKEN( I): M( I) * G( I, J)));
@FOR( GROUP ( J): W( J) = H( J) / N( J));
@FOR( GROUP ( J): P( J) =
@IF( W( J) #GE# 15.5, 18,
@IF( W( J) #GE# 15, 16,
@IF( W( J) #GE# 14.5, 14,
@IF( W(J) #GE# 13, 12,
@IF( W( J) #GE# 12.5, 11,
@IF( W( J) #GE# 11.5, 10, 9)))))));
F = @SUM( GROUP( J): W( J) * P( J));
MAX = F;
CALC:
@SET( 'GLOBAL', 1);
ENDCALC
DATA:
M =
14 12 13 10 14 12 13
11 13 11 13 14 15 12
10 12 14 14 13 13 15
12 14 12 10 15 14 13
11 12 14 15 11 13 13;
ENDDATA
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