# Alternative model file for the FarmerJones LP introduced in the AMPL
# Handout 1, using n as the # crops in place of a set of Crops.

param n; # # of crops

param Yield {1..n}; # yield per acre of crop i
param Labor {1..n};
param Price {1..n};
param Min_Crop {1..n};
param Max_Acres;
param Max_Hours;

var x {1..n} >= 0; # x[i] = # acres of crop i

maximize Total_Revenue: sum {j in 1..n} Price[j]*Yield[j]*x[j];

s.t.  LandCon: sum {j in 1..n} x[j] <= Max_Acres;
s.t.  LaborHrsCon: sum {j in 1..n} Labor[j]*x[j] <= Max_Hours;
s.t.  MinCropCon {j in 1..n}: Yield[j]*x[j] >= Min_Crop[j];