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using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace Hef.TopCoder.Srm145.Div2
{
  [TestClass]
  public class VendingMachineTest : VendingMachine
  {
    [TestMethod]
    public void TestExample0()
    {
      string[] prices = { "100 100 100" };
      string[] purchases = { "0,0:0", "0,2:5", "0,1:10" };

      Assert.AreEqual<int>(4, this.motorUse(prices, purchases));
    }

    [TestMethod]
    public void TestExample1()
    {
      string[] prices = { "100 200 300 400 500 600" };
      string[] purchases = { "0,2:0", "0,3:5", "0,1:10", "0,4:15" };

      Assert.AreEqual<int>(17, this.motorUse(prices, purchases));
    }

    [TestMethod]
    public void TestExample2()
    {
      string[] prices = { "100 200 300 400 500 600" };
      string[] purchases = { "0,2:0", "0,3:4", "0,1:8", "0,4:12" };

      Assert.AreEqual<int>(11, this.motorUse(prices, purchases));
    }

    [TestMethod]
    public void TestExample3()
    {
      string[] prices = { "100 100 100" };
      string[] purchases = { "0,0:10", "0,0:11" };

      Assert.AreEqual<int>(-1, this.motorUse(prices, purchases));
    }

    [TestMethod]
    public void TestExample4()
    {
      string[] prices = { "100 200 300", "600 500 400" };
      string[] purchases = { "0,0:0", "1,1:10", "1,2:20", "0,1:21", "1,0:22", "0,2:35" };

      Assert.AreEqual<int>(6, this.motorUse(prices, purchases));
    }
  }
}