質問編集履歴
2
発生している問題の詳細を変更した
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グローバル変数の取得が一度しか出来ない
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※2/13 追記
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CameraViewのcntsvとCommonのkeyyyが変化する処理がずっとループしており、
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再度getInt()することが出来ない
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```
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setIntを用いるCameraViewを記入し忘れていました、申し訳ありません。 助長になっていますが、最後のところにcommon.setInt(cntsv)があります。
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```Java
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public class CameraView extends SurfaceView
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implements SurfaceHolder.Callback, Camera.PreviewCallback {
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//カメラの縦横 640*480は標準的に動く
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private static final int PREVIEW_WIDTH = 640;
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private static final int PREVIEW_HEIGHT = 480;
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private static final int FRAME_WIDTH = 50;
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private static final int SCALE = 1;
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private static final int VIEW_POINTS = 200;
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private static final float PEN_WIDTH = 3.0F;
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private int mBufSize;
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private float[] mVal;
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private int mSamples;
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private int mTop;
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private int mStep;
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private Camera mCamera = null;
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private SurfaceHolder mHolder = null;
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private SurfaceTexture mSurfaceTexture = null;
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String bbb ="hello_world";
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int keyfin = 0;
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int cntsv ;
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Timer timer;
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Common common;
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public int coun = 0;
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public Paint paintf;
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public Activity activity;
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//CameraViewのメソッド
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public CameraView(Context context) {
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super(context);
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mHolder = getHolder();
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mHolder.addCallback(this);
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//ここでインスタンス化
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common = (Common)context.getApplicationContext();
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timer = new Timer();
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}
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//カメラ作成にはsurfaceが必要で、surfaceの作成
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public void surfaceCreated(SurfaceHolder holder) {
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// TODO Auto-generated method stub
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//getWidthは画面サイズ取得
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mBufSize = getWidth();
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mVal = new float[mBufSize];
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mStep = (mBufSize - FRAME_WIDTH * 2) / VIEW_POINTS;
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// カメラオープン(カメラのインスタンスを取得)
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mCamera = Camera.open();
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try {
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mCamera.setPreviewDisplay(holder);
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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}
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//surface変更時の処理
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public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
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// TODO Auto-generated method stub
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stopPreview();
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// プレビュー画面のサイズ設定
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Camera.Parameters params = mCamera.getParameters();
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params.setPreviewSize(PREVIEW_WIDTH, PREVIEW_HEIGHT);
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// params.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
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mCamera.setParameters(params);
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// プレビュー開始
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mTop = 0;
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mSamples = 0;
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startPreview();
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}
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//surface破棄時の処理
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public void surfaceDestroyed(SurfaceHolder holder) {
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// TODO Auto-generated method stub
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stopPreview();
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mCamera.release();
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mCamera = null;
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}
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//ここでdataを定義
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@Override
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public void onPreviewFrame(byte[] data, Camera camera) {
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// TODO Auto-generated method stub
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mVal[mSamples % mBufSize] = calcLuminance(data);
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// else {
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mSamples++;
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// drawLuminance();
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}
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// プレビュー開始
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private void startPreview() {
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mCamera.setPreviewCallback(this);
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mCamera.startPreview();
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}
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// プレビュー停止
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private void stopPreview() {
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mCamera.setPreviewCallback(null);
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mCamera.stopPreview();
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}
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// 輝度値の計算 "n"を箱として10個作る
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float n[] = new float[10];
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private float calcLuminance(byte[] data) {
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//時間計測開始
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long start = System.currentTimeMillis();
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float sumVal1 = 0.0f;
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float sumVal2 = 0.0f;
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float sumVal3 = 0.0f;
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float sumVal4 = 0.0f;
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//cntはcountするだけのもの
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int cnt = 0;
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int cnt1 = 0;
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int cnt2 = 0;
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int cnt3 = 0;
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int cnt4 = 0;
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//この範囲からこの範囲での、輝度値を積分している
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for (int y = PREVIEW_HEIGHT / 4 ; y < PREVIEW_HEIGHT * 3 / 8 ; y++) {
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//widthを1/4(160)から3/4(480)まで回す
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for (int x = PREVIEW_WIDTH / 4; x < PREVIEW_WIDTH * 3 / 8; x++) {
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//1/4~3/4は範囲を設定しただけ(端末の大きさにより、変化するため)
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//sumValは、画素値の合計値
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sumVal1 = sumVal1 + (float) (data[y * PREVIEW_WIDTH + x] & 0xff);
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cnt1++;
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}
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}
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//2回目
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for (int y = PREVIEW_HEIGHT / 4 ; y < PREVIEW_HEIGHT * 3 / 8 ; y++) {
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for (int x = PREVIEW_WIDTH * 3 / 8; x < PREVIEW_WIDTH * 3 / 4; x++) {
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sumVal2 = sumVal2 + (float) (data[y * PREVIEW_WIDTH + x] & 0xff);
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cnt2++;
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}
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}
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//3回目
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for (int y = PREVIEW_HEIGHT * 3 / 8 ; y < PREVIEW_HEIGHT * 3 /4 ; y++) {
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for (int x = PREVIEW_WIDTH / 4; x < PREVIEW_WIDTH * 3 / 8; x++) {
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sumVal3 = sumVal3 + (float) (data[y * PREVIEW_WIDTH + x] & 0xff);
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cnt3++;
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}
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}
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//4回目
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for (int y = PREVIEW_HEIGHT * 3/ 8 ; y < PREVIEW_HEIGHT * 3 / 4 ; y++) {
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for (int x = PREVIEW_WIDTH *3 / 8; x < PREVIEW_WIDTH * 3 / 4; x++) {
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sumVal4 = sumVal4 + (float) (data[y * PREVIEW_WIDTH + x] & 0xff);
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cnt4++;
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}
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}
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541
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//合計値を、平均化している
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sumVal1 = sumVal1/cnt1;
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sumVal2 = sumVal2/cnt2;
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sumVal3 = sumVal3/cnt3;
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sumVal4 = sumVal4/cnt4;
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552
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//最大値を求めるコード
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556
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float sumValarray[]={sumVal1,sumVal2,sumVal3,sumVal4};
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558
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559
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//とりあえず0を入れた
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560
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561
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float sumValmax=sumValarray[0];
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562
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563
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564
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565
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//sumValmaxを特定するループ
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566
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567
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for(int i=0;i<sumValarray.length;i++){
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568
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569
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if(sumValarray[i]>=sumValmax){
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570
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571
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sumValmax= sumValarray[i];
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572
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|
573
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//keyを取得するためのcntsv
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574
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575
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cntsv=i;
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576
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|
577
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}
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578
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+
|
579
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+
|
580
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+
|
581
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// グローバル変数のset
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582
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+
|
583
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+
common.setInt(cntsv);
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584
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+
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585
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+
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586
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+
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587
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}
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588
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589
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```
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590
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199
591
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200
592
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201
593
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