tea_mixing.fzn

array [1..3] of int: price = [30, 27, 21];
var int: INT____00001 :: is_defined_var :: var_is_introduced;
var int: minexp :: output_var = INT____00001;
array [1..3] of var int: x :: output_array([1..3]);
constraint int_le(0, x[1]);
constraint int_le(0, x[2]);
constraint int_le(0, x[3]);
constraint int_lin_eq([1, 1, 1], [x[1], x[2], x[3]], 20);
constraint int_lin_eq([30, 27, 21], [x[1], x[2], x[3]], 570);
constraint int_lin_eq([-1, 30, 27, 21], [INT____00001, x[1], x[2], x[3]], 0) :: defines_var(INT____00001);
solve  :: int_search(x, first_fail, indomain, complete) minimize INT____00001;