public void TestMaxFlowMinCostLarge()
{
var inputStream = new StreamReader(@"..\..\TestData\mincostmaxflow.in");
var answerStream = new StreamReader(@"..\..\TestData\mincostmaxflow.ans");
var a = Array.ConvertAll <string, int>(inputStream.ReadLine().Split(' '), int.Parse);
while (a[0] > 0)
{
var b = Array.ConvertAll <string, int>(answerStream.ReadLine().Split(' '), int.Parse);
int expectedMaxFlow = b[0], expectedMinCost = b[1];
int n = a[0], m = a[1], source = a[2], sink = a[3];
CostNetwork cn = new CostNetwork();
for (int i = 0; i < m; i++)
{
a = Array.ConvertAll <string, int>(inputStream.ReadLine().Split(' '), int.Parse);
int src = a[0], dest = a[1], cap = a[2], cost = a[3];
if (src >= n || dest >= n)
{
throw new Exception();
}
cn.AddEdge(src, dest, cap, cost);
}
var ans = cn.MaxFlowMinCost(source, sink);
var maxFlow = ans[0];
var minCost = ans[1];
Assert.AreEqual(expectedMaxFlow, maxFlow);
Assert.AreEqual(expectedMinCost, minCost);
a = Array.ConvertAll <string, int>(inputStream.ReadLine().Split(' '), int.Parse);
}
}
public void TestMaxFlowMinCost()
{
CostNetwork network = new CostNetwork();
/*network.AddEdge(0, 1, 15, 4);
* network.AddEdge(0, 2, 8, 4);
* network.AddEdge(1, 2, 1000, 2);
* network.AddEdge(1, 3, 4, 2);
* network.AddEdge(1, 4, 10, 6);
* network.AddEdge(2, 3, 15, 1);
* network.AddEdge(3, 4, 5, 3);
* network.AddEdge(3, 4, 1000, 2);
* network.AddEdge(4, 2, 4, 1);
* network.AddEdge(3, 5, 1000, 0);
* network.AddEdge(4, 5, 1000, 0);*/
/*
* network.AddEdge(0, 1, 3, 5);
* network.AddEdge(0, 2, 8, 6);
* network.AddEdge(1, 2, 4, 2);
* network.AddEdge(1, 3, 6, 70);
* network.AddEdge(2, 4, 7, 9);
* network.AddEdge(3, 5, 5, 20);
* network.AddEdge(4, 1, 5, 1);
* network.AddEdge(4, 3, 2, 9);
* network.AddEdge(4, 5, 8, 15);*/
int n = 20;
Random r = new Random();
for (int i = 0; i < 100; i++)
{
int x = r.Next(0, n);
int y = r.Next(0, n);
int cap = r.Next(1, 100);
int cost = 100 - i; // r.Next(1, 100);
if (x != y)
{
network.AddEdge(x, y, cap, cost);
}
}
network.MaxFlowMinCost(0, n - 1);
}