<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/firstIncrease"
        style="@style/Widget.AppCompat.Button.Colored"
        android:layout_width="88dp"
        android:layout_height="wrap_content"

        android:layout_marginEnd="4dp"
        android:layout_marginLeft="48dp"
        android:layout_marginRight="4dp"
        android:layout_marginStart="48dp"
        android:layout_marginTop="152dp"
        android:onClick="increaseFirst"
        android:text="@string/button_label_inc"
        android:textSize="24sp"
        app:layout_constraintBottom_toTopOf="@+id/firstNum"
        app:layout_constraintEnd_toStartOf="@+id/secondIncrease"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0" />

    <Button
        android:id="@+id/secondIncrease"
        style="@style/Widget.AppCompat.Button.Colored"
        android:layout_width="88dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="4dp"
        android:layout_marginLeft="4dp"
        android:layout_marginRight="4dp"
        android:layout_marginStart="4dp"
        android:layout_marginTop="27dp"
        android:onClick="increaseSecond"
        android:text="@string/button_label_inc"
        android:textSize="24sp"
        app:layout_constraintBottom_toTopOf="@+id/secondNum"
        app:layout_constraintEnd_toStartOf="@+id/thirdIncrease"
        app:layout_constraintStart_toEndOf="@+id/firstIncrease"
        app:layout_constraintTop_toBottomOf="@+id/titleText"
        app:layout_constraintVertical_bias="0.0" />

    <Button
        android:id="@+id/thirdIncrease"
        style="@style/Widget.AppCompat.Button.Colored"
        android:layout_width="88dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="48dp"
        android:layout_marginLeft="4dp"
        android:layout_marginRight="48dp"
        android:layout_marginStart="4dp"
        android:layout_marginTop="152dp"
        android:onClick="increaseThird"
        android:text="@string/button_label_inc"
        android:textSize="24sp"
        app:layout_constraintBottom_toTopOf="@+id/thirdNum"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/secondIncrease"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="1.0" />


    <Button
        android:id="@+id/firstDecrease"
        style="@style/Widget.AppCompat.Button.Colored"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="4dp"
        android:layout_marginLeft="48dp"
        android:layout_marginRight="4dp"
        android:layout_marginStart="48dp"
        android:onClick="decreaseFirst"
        android:text="@string/button_label_dec"
        android:textSize="24sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toStartOf="@+id/secondDecrease"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/firstNum" />

    <Button
        android:id="@+id/secondDecrease"
        style="@style/Widget.AppCompat.Button.Colored"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="4dp"
        android:layout_marginLeft="4dp"
        android:layout_marginRight="4dp"
        android:layout_marginStart="4dp"
        android:onClick="decreaseSecond"
        android:text="@string/button_label_dec"
        android:textSize="24sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toStartOf="@+id/thirdDecrease"
        app:layout_constraintStart_toEndOf="@+id/firstDecrease"
        app:layout_constraintTop_toBottomOf="@+id/secondNum" />

    <Button
        android:id="@+id/thirdDecrease"
        style="@style/Widget.AppCompat.Button.Colored"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="48dp"
        android:layout_marginLeft="4dp"
        android:layout_marginRight="48dp"
        android:layout_marginStart="4dp"
        android:onClick="decreaseThird"
        android:text="@string/button_label_dec"
        android:textSize="24sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toEndOf="@+id/secondDecrease"
        app:layout_constraintTop_toBottomOf="@+id/thirdNum" />

    <Button
        android:id="@+id/check"
        android:layout_width="0dp"
        android:layout_height="54dp"
        android:layout_marginBottom="32dp"
        android:layout_marginEnd="80dp"
        android:layout_marginLeft="80dp"
        android:layout_marginRight="80dp"
        android:layout_marginStart="80dp"
        android:layout_marginTop="8dp"
        android:background="@color/colorPrimary"
        android:text="@string/button_label_check"
        android:textColor="@android:color/white"
        android:textSize="40sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.803" />

    <TextView
        android:id="@+id/firstNum"
        android:layout_width="wrap_content"
        android:layout_height="108dp"
        android:layout_marginLeft="64dp"
        android:layout_marginStart="64dp"
        android:gravity="center_horizontal|center_vertical"
        android:text="@string/first_initial_value"
        android:textSize="80sp"
        app:layout_constraintBottom_toTopOf="@+id/firstDecrease"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/firstIncrease" />

    <TextView
        android:id="@+id/secondNum"
        android:layout_width="wrap_content"
        android:layout_height="108dp"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:gravity="center_horizontal|center_vertical"
        android:text="@string/second_initial_value"
        android:textSize="80sp"
        app:layout_constraintBottom_toTopOf="@+id/secondDecrease"
        app:layout_constraintEnd_toStartOf="@+id/thirdNum"
        app:layout_constraintHorizontal_bias="0.506"
        app:layout_constraintStart_toEndOf="@+id/firstNum"
        app:layout_constraintTop_toBottomOf="@+id/secondIncrease" />

    <TextView
        android:id="@+id/thirdNum"
        android:layout_width="wrap_content"
        android:layout_height="108dp"
        android:layout_marginEnd="64dp"
        android:layout_marginRight="64dp"
        android:gravity="center_horizontal|center_vertical"
        android:text="@string/third_initial_value"
        android:textSize="80sp"
        app:layout_constraintBottom_toTopOf="@+id/thirdDecrease"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/thirdIncrease" />

    <TextView
        android:id="@+id/scoreText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="40dp"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:text="@string/score_label"
        android:textSize="50sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="1.0" />

    <TextView
        android:id="@+id/titleText"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:gravity="center_horizontal|center_vertical"
        android:text="@string/title_label"
        android:textSize="40sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0" />

</android.support.constraint.ConstraintLayout>