Downloads

• Executable JAR of the visualizer
• Source code of the visualizer
• Training data

In order to use the offline tester / visualizer tool for testing your solution locally, you'll have to modify your solution by adding the main method that interacts with the tester / visualizer via reading data from standard input and writing data to standard output. As long as you do not change the implementation of method training and testing, this doesn't affect the way your solution works when being submitted to our server.

To simulate a single test case, your program should implement the following protocol (each integer is to be read from / printed in a separate line):

• Read integer NVideo.
• Receive NVideo training videos by performing the following NVideo times:
•      Read integer F.
•      Receive F image frames by performing the following F times:.
•          Read 307200 integers imageDataLeft[0], imageDataLeft[1], ... , imageDataLeft[307199].
•          Read 307200 integers imageDataRight[0], imageDataRight[1], ... , imageDataRight[307199].
•          Read 4 integers leftX, leftY, rightX, rightY.
•          Call training(videoIndex, frameIndex, imageDataLeft, imageDataRight, leftX, leftY, rightX, rightY). Let ret be the return value.
•          Print the integer in ret. Flush standard output stream.
•          Break out of the training loop if ret==1
• Call doneTraining().
• Read integer M.
• Receive M testing frames by performing the following M times:
•      Read integer videoIndex.
•      Read integer frameIndex.
•      Read 307200 integers imageDataLeft[0], imageDataLeft[1], ... , imageDataLeft[307199].
•      Read 307200 integers imageDataRight[0], imageDataRight[1], ... , imageDataRight[307199].
•      Call testing(videoIndex, frameIndex, imageDataLeft, imageDataRight). Let ret[] be the return value.
•      Print the integers in ret[] each on a separate lines. Flush standard output stream.

In other words, you should implement the following pseudocode in the main method of your solution:

    
    NVideo = parseInt(readLine())
    for (video=0; video < NVideo; video++)
    {
        F = parseInt(readLine())
        for (frame=0; frame < F; frame++)
        {
            for (j=0; j < 307200; j++)
                imageDataLeft[j] = parseInt(readLine())
            for (j=0; j < 307200; j++)
                imageDataRight[j] = parseInt(readLine())
            leftX = parseInt(readLine())
            leftY = parseInt(readLine())
            rightX = parseInt(readLine())
            rightY = parseInt(readLine())
            ret = training(video, frame, imageDataLeft, imageDataRight, leftX, leftY, rightX, rightY)
            printLine(ret)
            flush(stdout)
            if (ret==1) goto testingPhase 	
    	}
    }
    
testingPhase:
    doneTraining()
    M = parseInt(readLine())
    for (frame=0; frame < M; frame++)
    {
        videoIndex = parseInt(readLine())
        frameIndex = parseInt(readLine())
        for (j=0; j < 307200; j++)
            imageDataLeft[j] = parseInt(readLine())
        for (j=0; j < 307200; j++)
            imageDataRight[j] = parseInt(readLine())
        ret[] = testing(videoIndex, frameIndex, imageDataLeft, imageDataRight)
        for (j=0; j < 4; j++)
            printLine(ret[j])
        flush(stdout)
    }

In order to run the tester / visualizer, you should use the following command:

java -jar tester.jar -exec "<command>" -train example_training.txt -test example_testing.txt -folder data/

<command> is the command you would use to execute your solution. If your compiled solution is an executable file, the command will just be the full path to it, for example, "C:\TopCoder\solution.exe" or "~/topcoder/solution". In case your compiled solution is to be run with the help of an interpreter, for example, if you program in Java, the command will be something like "java -cp C:\TopCoder Solution".

Additionally you can use the following parameters:

• -seed <seed>. Sets the seed used for test case generation. Default value is 1.
• -train <training file>. Sets the file that contains a list of the training videos.
• -test <testing file>. Sets the file that contains a list of the testing videos.
• -folder <image folder>. Sets the base folder where the images are located.
• -novis. Turns visualization off.
• -silent. Turns debug output off.
• -delay <time>. Time in milliseconds. The delay between images when visualizing.

You can print any debug information of your solution to the standard error stream and it will be forwarded to the standard output of the tester.

For more information on using visualizers, please check the following recipe draft from TopCoder Cookbook. Note that this is not a troubleshooting thread, please use the match forum for questions instead.