internal void queens(int n)
{
var c = 0;
var net = new Network();
var q = new IntVariable[n];
var u = new IntVariable[n];
var d = new IntVariable[n];
for (var i = 0; i < n; ++i)
{
q[i] = new IntVariable(net, 1, n);
u[i] = q[i].Add(i);
d[i] = q[i].Subtract(i);
}
new NotEquals(net, q);
new NotEquals(net, u);
new NotEquals(net, d);
Solver solver = new DefaultSolver(net);
for (solver.Start(); solver.WaitNext(); solver.Resume())
{
Solution solution = solver.Solution;
sol[c] = new int[8];
for (int i = 0; i < n; i++)
{
var s = solution.GetIntValue(q[i]);
sol[c][i] = solution.GetIntValue(q[i]);
}
c++;
}
solver.Stop();
}
public static void Main(string[] args)
{
var net = new Network();
var x = new IntVariable(net, 0, 708);
var y = new IntVariable(net, 0, 708);
var z = new IntVariable(net, 0, 708);
var t = new IntVariable(net, 0, 708);
x.Add(y).Add(z).Add(t).Equals(711);
x.Ge(y);
y.Ge(z);
z.Ge(t);
x.Multiply(y).Multiply(z).Multiply(t).Equals(711000000);
Solver solver = new DefaultSolver(net);
for (solver.Start(); solver.WaitNext(); solver.Resume())
{
var solution = solver.Solution;
Console.Out.WriteLine();
Console.Out.WriteLine(" {0:F} + {1:F} + {2:F} + {3:F} = {4:F} ",
solution.GetIntValue(x)/100.0, solution.GetIntValue(y)/100.0,
solution.GetIntValue(z)/100.0, solution.GetIntValue(t)/100.0,7.11 );
}
solver.Stop();
Console.ReadLine();
}
static void Main(string[] args)
{
Network net = new Network();
IntVariable[] A = new IntVariable[6];
for (int j=0; j< 6; j++)
{
IntDomain d = new IntDomain(1, 9);
A[j] = new IntVariable(net);
A[j].Domain = d;
Trail trail = new Trail();
}
((A[4].Multiply(10).Add(A[5])).Multiply(A[0])).Add(
((A[1].Multiply(10).Add(A[2])).Multiply(A[3]))).Equals(
(A[1].Multiply(10).Add(A[2])).Multiply(A[4].Multiply(10).Add(A[5])));
new NotEquals(net, A);
Solver solver = new DefaultSolver(net);
int i = 0;
for (solver.Start(); solver.WaitNext(); solver.Resume())
{
Solution solution = solver.Solution;
Console.Out.WriteLine();
Console.Out.WriteLine(solution.GetIntValue(A[0]) + " " + solution.GetIntValue(A[3]));
Console.Out.WriteLine("-- + -- = 1");
Console.Out.WriteLine(solution.GetIntValue(A[1])+""+solution.GetIntValue(A[2])+" "+
solution.GetIntValue(A[4]) + solution.GetIntValue(A[5]));
Console.Out.WriteLine("=========");
i++;
}
Console.Out.WriteLine("There are {0} solutions",i);
solver.Stop();
Console.In.ReadLine();
//------------------------------------------------------------------------------------------
}
public virtual IntVariable Negate()
{
Network net = Network;
var x = new IntVariable(net);
// x = - this
new IntFunc(net, IntFunc.Negate, x, this);
return(x);
}
public virtual IntVariable Min(int value)
{
Network net = Network;
var x = new IntVariable(net);
// x = Min(this, value)
new IntArith(net, IntArith.MIN, x, this, new IntVariable(net, value));
return(x);
}
public virtual IntVariable Min(IntVariable v)
{
Network net = Network;
var x = new IntVariable(net);
// x = Min(this, v)
new IntArith(net, IntArith.MIN, x, this, v);
return(x);
}
public virtual IntVariable Multiply(int value)
{
Network net = Network;
var x = new IntVariable(net);
// x = this * value
new IntArith(net, IntArith.MULTIPLY, x, this, new IntVariable(net, value));
return(x);
}
public virtual IntVariable Multiply(IntVariable v)
{
Network net = Network;
var x = new IntVariable(net);
// x = this * v
new IntArith(net, IntArith.MULTIPLY, x, this, v);
return(x);
}
public virtual IntVariable Subtract(int value)
{
Network net = Network;
var x = new IntVariable(net);
// x = this - value
new IntArith(net, IntArith.Subtract, x, this, new IntVariable(net, value));
return(x);
}
public virtual IntVariable Subtract(IntVariable v)
{
Network net = Network;
var x = new IntVariable(net);
// x = this - v
new IntArith(net, IntArith.Subtract, x, this, v);
return(x);
}
internal static void maxExample()
{
var net = new Network();
var x = new IntVariable(net, -1, 1, "x");
var y = new IntVariable(net, -1, 1, "y");
var z = x.Max(y);
z.Name ="z";
runExample(net, Solver.Default);
}
public virtual IntVariable Add(IntVariable v)
{
Network net = Network;
var x = new IntVariable(net);
// x = this + v
new IntArith(net, IntArith.Add, x, this, v);
return(x);
}
internal static void absExample()
{
var net = new Network();
var x = new IntVariable(net, -3, 2, "x");
var y = x.Abs();
y.NotEquals(2);
y.Name ="y";
runExample(net, Solver.Default);
}
public virtual IntVariable Add(int value)
{
Network net = Network;
var x = new IntVariable(net);
// x = this + value
new IntArith(net, IntArith.Add, x, this, new IntVariable(net, value));
return(x);
}
public virtual IntVariable Abs()
{
Network net = Network;
var x = new IntVariable(net);
// x = Abs(this)
new IntFunc(net, IntFunc.Abs, x, this);
return(x);
}
public virtual IntVariable Sign()
{
Network net = Network;
var x = new IntVariable(net);
// x = Sign(this)
new IntFunc(net, IntFunc.Sign, x, this);
return(x);
}
internal static void pp()
{
Network net = new Network();
// number of materials
int m = 3;
// limit of each material
int[] limit = new int[] { 1650, 1400, 1800 };
// number of products
int n = 2;
// profit of each product
int[] p = new int[] { 5, 4 };
// amount of materials required to make each product
int[][] a = new int[][] { new int[] { 15, 10, 9 }, new int[] { 11, 14, 20 } };
// initialize variables for products
IntVariable[] x = new IntVariable[n];
for (int j = 0; j < n; j++)
{
x[j] = new IntVariable(net);
x[j].Ge(0);
}
// generate constraits of limiting materials
for (int i = 0; i < m; i++)
{
IntVariable sum = new IntVariable(net, 0);
for (int j = 0; j < n; j++)
{
sum = sum.Add(x[j].Multiply(a[j][i]));
}
sum.Le(limit[i]);
}
// total profit
IntVariable profit = new IntVariable(net, 0);
for (int j = 0; j < n; j++)
{
profit = profit.Add(x[j].Multiply(p[j]));
}
// maximize the total profit
net.Objective = profit;
// iteratively find a better solution until the optimal solution is found
Solver solver = new DefaultSolver(net, Solver.Maximize | Solver.Better);
for (solver.Start(); solver.WaitNext(); solver.Resume())
{
Solution solution = solver.Solution;
Console.WriteLine(solver.GetCount());
Console.Out.WriteLine("Profit = " + solution.GetIntValue(profit));
for (int j = 0; j < n; j++)
{
Console.Out.WriteLine("x[" + j + "]=" + solution.GetIntValue(x[j]));
}
Console.Out.WriteLine();
}
solver.Stop();
Console.ReadLine();
}
protected override IToken EvaluateComplexOperation(IToken n, Tokens o)
{
Variable vr;
Variable vn = ConvertTokenToVariable(n);
switch(o) {
case Tokens.UMINUS:
vr = new IntVariable(_network, "-" + vn.ToString());
new IntFunc(_network, IntFunc.Negate, vr, vn);
return new VariableToken(vr);
default:
throw new ArgumentException();
}
}
internal static void minimizeExample()
{
var net = new Network();
var x = new IntVariable(net, 1, 10, "x");
var y = new IntVariable(net, 1, 10, "y");
// x + y >= 10
x.Add(y).Ge(10);
// z = max(x, y)
var z = x.Max(y);
z.Name ="z";
// minimize z
net.Objective = z;
runExample(net, Solver.Minimize | Solver.Better);
}
internal static void elementExample()
{
var net = new Network();
var x = new IntVariable(net, "x");
var i = new IntVariable(net, "i");
const int n = 4;
var v = new IntVariable[n];
//var ran = new Random(1000);
for (var j = 0; j < n; j++)
{
//v[j] = new IntVariable(net, ran.Next(200));
v[j] = new IntVariable(net, 10 * (j + 1)+2);
}
new Element(net, x, i, v);
runExample(net, Solver.Default);
}
public virtual IntVariable Add(int value)
{
Network net = Network;
var x = new IntVariable(net);
// x = this + value
new IntArith(net, IntArith.Add, x, this, new IntVariable(net, value));
return x;
}
public virtual IntVariable Add(IntVariable v)
{
Network net = Network;
var x = new IntVariable(net);
// x = this + v
new IntArith(net, IntArith.Add, x, this, v);
return x;
}
public virtual IntVariable Abs()
{
Network net = Network;
var x = new IntVariable(net);
// x = Abs(this)
new IntFunc(net, IntFunc.Abs, x, this);
return x;
}
public virtual void Gt(IntVariable v, ConstraintTypes cType, int weight)
{
Network net = Network;
new IntComparison(net, IntComparison.Gt, this, v, cType, weight);
}
public virtual void Lt(IntVariable v)
{
Lt(v, ConstraintTypes.Hard);
}
public virtual IntVariable Subtract(IntVariable v)
{
Network net = Network;
var x = new IntVariable(net);
// x = this - v
new IntArith(net, IntArith.Subtract, x, this, v);
return x;
}
public virtual void NotEquals(IntVariable v)
{
NotEquals(v, ConstraintTypes.Hard);
}
public virtual void NotEquals(IntVariable v, ConstraintTypes cType, int weight)
{
Network net = Network;
new NotEquals(net, this, v, cType, weight);
}
public virtual IntVariable Multiply(int value)
{
Network net = Network;
var x = new IntVariable(net);
// x = this * value
new IntArith(net, IntArith.MULTIPLY, x, this, new IntVariable(net, value));
return x;
}
public virtual IntVariable Min(int value)
{
Network net = Network;
var x = new IntVariable(net);
// x = Min(this, value)
new IntArith(net, IntArith.MIN, x, this, new IntVariable(net, value));
return x;
}
public virtual void Lt(IntVariable v, ConstraintTypes cType, int weight)
{
Network net = Network;
new IntComparison(net, IntComparison.Lt, this, v, cType, weight);
}
public void Equals(IntVariable v)
{
Equals(v, ConstraintTypes.Hard);
}
public virtual void Gt(IntVariable v, ConstraintTypes cType)
{
Gt(v, cType, 0);
}
public void Equals(IntVariable v, ConstraintTypes cType)
{
Equals(v, cType, 0);
}
public virtual void Ge(IntVariable v)
{
Ge(v, ConstraintTypes.Hard);
}
public virtual void Ge(IntVariable v, ConstraintTypes cType)
{
Ge(v, cType, 0);
}
public void Equals(IntVariable v)
{
Equals(v, ConstraintTypes.Hard);
}
public virtual void Lt(IntVariable v, ConstraintTypes cType)
{
Lt(v, cType, 0);
}
public void Equals(IntVariable v, ConstraintTypes cType)
{
Equals(v, cType, 0);
}
public virtual IntVariable Min(IntVariable v)
{
Network net = Network;
var x = new IntVariable(net);
// x = Min(this, v)
new IntArith(net, IntArith.MIN, x, this, v);
return x;
}
public virtual void NotEquals(IntVariable v)
{
NotEquals(v, ConstraintTypes.Hard);
}
public virtual IntVariable Multiply(IntVariable v)
{
Network net = Network;
var x = new IntVariable(net);
// x = this * v
new IntArith(net, IntArith.MULTIPLY, x, this, v);
return x;
}
public virtual void NotEquals(IntVariable v, ConstraintTypes cType)
{
NotEquals(v, cType, 0);
}
public virtual IntVariable Negate()
{
Network net = Network;
var x = new IntVariable(net);
// x = - this
new IntFunc(net, IntFunc.Negate, x, this);
return x;
}
public virtual void NotEquals(IntVariable v, ConstraintTypes cType, int weight)
{
Network net = Network;
new NotEquals(net, this, v, cType, weight);
}
public virtual void NotEquals(IntVariable v, ConstraintTypes cType)
{
NotEquals(v, cType, 0);
}
public virtual void Le(IntVariable v)
{
Le(v, ConstraintTypes.Hard);
}
public virtual IntVariable Sign()
{
Network net = Network;
var x = new IntVariable(net);
// x = Sign(this)
new IntFunc(net, IntFunc.Sign, x, this);
return x;
}
public virtual void Le(IntVariable v, ConstraintTypes cType)
{
Le(v, cType, 0);
}
public virtual IntVariable Subtract(int value)
{
Network net = Network;
var x = new IntVariable(net);
// x = this - value
new IntArith(net, IntArith.Subtract, x, this, new IntVariable(net, value));
return x;
}
public virtual void Gt(IntVariable v)
{
Gt(v, ConstraintTypes.Hard);
}