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[Ultralytics](https://www.ultralytics.com/) creates cutting-edge, state-of-the-art (SOTA) [YOLO models](https://www.ultralytics.com/yolo) built on years of foundational research in computer vision and AI. Constantly updated for performance and flexibility, our models are **fast**, **accurate**, and **easy to use**. They excel at [object detection](https://docs.ultralytics.com/tasks/detect), [tracking](https://docs.ultralytics.com/modes/track), [instance segmentation](https://docs.ultralytics.com/tasks/segment), [semantic segmentation](https://docs.ultralytics.com/tasks/semantic), [image classification](https://docs.ultralytics.com/tasks/classify), and [pose estimation](https://docs.ultralytics.com/tasks/pose) tasks.

Find detailed documentation in the [Ultralytics Docs](https://docs.ultralytics.com/). Get support via [GitHub Issues](https://github.com/ultralytics/ultralytics/issues/new/choose). Join discussions on [Discord](https://discord.com/invite/ultralytics), [Reddit](https://www.reddit.com/r/ultralytics/), and the [Ultralytics Community Forums](https://community.ultralytics.com/)!

Request an Enterprise License for commercial use at [Ultralytics Licensing](https://www.ultralytics.com/license).

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## 📄 Documentation

See below for quickstart installation and usage examples. For comprehensive guidance on training, validation, prediction, and deployment, refer to our full [Ultralytics Docs](https://docs.ultralytics.com/).

<details open>
<summary>Install</summary>

Install the `ultralytics` package, including all [requirements](https://github.com/ultralytics/ultralytics/blob/main/pyproject.toml), in a [**Python>=3.8**](https://www.python.org/) environment with [**PyTorch>=1.8**](https://pytorch.org/get-started/locally/).

[![PyPI - Version](https://img.shields.io/pypi/v/ultralytics?logo=pypi&logoColor=white)](https://pypi.org/project/ultralytics/) [![Ultralytics Downloads](https://static.pepy.tech/badge/ultralytics)](https://clickpy.clickhouse.com/dashboard/ultralytics) [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/ultralytics?logo=python&logoColor=gold)](https://pypi.org/project/ultralytics/)

```bash
pip install ultralytics
```

For alternative installation methods, including [Conda](https://anaconda.org/conda-forge/ultralytics), [Docker](https://hub.docker.com/r/ultralytics/ultralytics), and building from source via Git, please consult the [Quickstart Guide](https://docs.ultralytics.com/quickstart).

[![Conda Version](https://img.shields.io/conda/vn/conda-forge/ultralytics?logo=condaforge)](https://anaconda.org/conda-forge/ultralytics) [![Docker Image Version](https://img.shields.io/docker/v/ultralytics/ultralytics?sort=semver&logo=docker)](https://hub.docker.com/r/ultralytics/ultralytics) [![Ultralytics Docker Pulls](https://img.shields.io/docker/pulls/ultralytics/ultralytics?logo=docker)](https://hub.docker.com/r/ultralytics/ultralytics)

</details>

<details open>
<summary>Usage</summary>

### CLI

You can use Ultralytics YOLO directly from the Command Line Interface (CLI) with the `yolo` command:

```bash
# Predict using a pretrained YOLO model (e.g., YOLO26n) on an image
yolo predict model=yolo26n.pt source='https://ultralytics.com/images/bus.jpg'
```

The `yolo` command supports various tasks and modes, accepting additional arguments like `imgsz=640`. Explore the YOLO [CLI Docs](https://docs.ultralytics.com/usage/cli) for more examples.

### Python

Ultralytics YOLO can also be integrated directly into your Python projects. It accepts the same [configuration arguments](https://docs.ultralytics.com/usage/cfg) as the CLI:

```python
from ultralytics import YOLO

# Load a pretrained YOLO26n model
model = YOLO("yolo26n.pt")

# Train the model on the COCO8 dataset for 100 epochs
train_results = model.train(
    data="coco8.yaml",  # Path to dataset configuration file
    epochs=100,  # Number of training epochs
    imgsz=640,  # Image size for training
    device="cpu",  # Device to run on (e.g., 'cpu', 0, [0,1,2,3])
)

# Evaluate the model's performance on the validation set
metrics = model.val()

# Perform object detection on an image
results = model("path/to/image.jpg")  # Predict on an image
results[0].show()  # Display results

# Export the model to ONNX format for deployment
path = model.export(format="onnx")  # Returns the path to the exported model
```

Discover more examples in the YOLO [Python Docs](https://docs.ultralytics.com/usage/python).

</details>

## ✨ Models

Ultralytics supports a wide range of YOLO models, from early versions like [YOLOv3](https://docs.ultralytics.com/models/yolov3) to the latest [YOLO26](https://docs.ultralytics.com/models/yolo26). The tables below showcase YOLO26 models pretrained on [COCO](https://docs.ultralytics.com/datasets/detect/coco) for [Detection](https://docs.ultralytics.com/tasks/detect), [Segmentation](https://docs.ultralytics.com/tasks/segment), and [Pose Estimation](https://docs.ultralytics.com/tasks/pose). [Semantic Segmentation](https://docs.ultralytics.com/tasks/semantic) models are pretrained on [Cityscapes](https://docs.ultralytics.com/datasets/semantic/cityscapes), and [Classification](https://docs.ultralytics.com/tasks/classify) models are pretrained on [ImageNet](https://docs.ultralytics.com/datasets/classify/imagenet). [Tracking](https://docs.ultralytics.com/modes/track) mode is compatible with Detection, Segmentation, and Pose models. All [Models](https://docs.ultralytics.com/models) download automatically from the latest Ultralytics [release](https://github.com/ultralytics/assets/releases) on first use.

<a href="https://docs.ultralytics.com/tasks" target="_blank">
    <img width="100%" src="https://raw.githubusercontent.com/ultralytics/assets/main/docs/ultralytics-yolov8-tasks-banner.avif" alt="Ultralytics YOLO supported tasks">
</a>
<br>
<br>

<details open><summary>Detection (COCO)</summary>

Explore the [Detection Docs](https://docs.ultralytics.com/tasks/detect) for usage examples. These models are trained on the [COCO dataset](https://cocodataset.org/), featuring 80 object classes.

| Model                                                                                | size<br><sup>(pixels)</sup> | mAP<sup>val<br>50-95</sup> | mAP<sup>val<br>50-95(e2e)</sup> | Speed<br><sup>CPU ONNX<br>(ms)</sup> | Speed<br><sup>T4 TensorRT10<br>(ms)</sup> | params<br><sup>(M)</sup> | FLOPs<br><sup>(B)</sup> |
| ------------------------------------------------------------------------------------ | --------------------------- | -------------------------- | ------------------------------- | ------------------------------------ | ----------------------------------------- | ------------------------ | ----------------------- |
| [YOLO26n](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26n.pt) | 640                         | 40.9                       | 40.1                            | 38.9 ± 0.7                           | 1.7 ± 0.0                                 | 2.4                      | 5.4                     |
| [YOLO26s](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26s.pt) | 640                         | 48.6                       | 47.8                            | 87.2 ± 0.9                           | 2.5 ± 0.0                                 | 9.5                      | 20.7                    |
| [YOLO26m](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26m.pt) | 640                         | 53.1                       | 52.5                            | 220.0 ± 1.4                          | 4.7 ± 0.1                                 | 20.4                     | 68.2                    |
| [YOLO26l](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26l.pt) | 640                         | 55.0                       | 54.4                            | 286.2 ± 2.0                          | 6.2 ± 0.2                                 | 24.8                     | 86.4                    |
| [YOLO26x](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26x.pt) | 640                         | 57.5                       | 56.9                            | 525.8 ± 4.0                          | 11.8 ± 0.2                                | 55.7                     | 193.9                   |

- **mAP<sup>val</sup>** values refer to single-model single-scale performance on the [COCO val2017](https://cocodataset.org/) dataset. See [YOLO Performance Metrics](https://docs.ultralytics.com/guides/yolo-performance-metrics) for details. <br>Reproduce with `yolo val detect data=coco.yaml device=0`
- **Speed** metrics are averaged over COCO val images using an [Amazon EC2 P4d](https://aws.amazon.com/ec2/instance-types/p4/) instance. CPU speeds measured with [ONNX](https://onnx.ai/) export. GPU speeds measured with [TensorRT](https://developer.nvidia.com/tensorrt) export. <br>Reproduce with `yolo val detect data=coco.yaml batch=1 device=0|cpu`

</details>

<details><summary>Segmentation (COCO)</summary>

Refer to the [Segmentation Docs](https://docs.ultralytics.com/tasks/segment) for usage examples. These models are trained on [COCO-Seg](https://docs.ultralytics.com/datasets/segment/coco), including 80 classes.

| Model                                                                                        | size<br><sup>(pixels)</sup> | mAP<sup>box<br>50-95(e2e)</sup> | mAP<sup>mask<br>50-95(e2e)</sup> | Speed<br><sup>CPU ONNX<br>(ms)</sup> | Speed<br><sup>T4 TensorRT10<br>(ms)</sup> | params<br><sup>(M)</sup> | FLOPs<br><sup>(B)</sup> |
| -------------------------------------------------------------------------------------------- | --------------------------- | ------------------------------- | -------------------------------- | ------------------------------------ | ----------------------------------------- | ------------------------ | ----------------------- |
| [YOLO26n-seg](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26n-seg.pt) | 640                         | 39.6                            | 33.9                             | 53.3 ± 0.5                           | 2.1 ± 0.0                                 | 2.7                      | 9.1                     |
| [YOLO26s-seg](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26s-seg.pt) | 640                         | 47.3                            | 40.0                             | 118.4 ± 0.9                          | 3.3 ± 0.0                                 | 10.4                     | 34.2                    |
| [YOLO26m-seg](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26m-seg.pt) | 640                         | 52.5                            | 44.1                             | 328.2 ± 2.4                          | 6.7 ± 0.1                                 | 23.6                     | 121.5                   |
| [YOLO26l-seg](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26l-seg.pt) | 640                         | 54.4                            | 45.5                             | 387.0 ± 3.7                          | 8.0 ± 0.1                                 | 28.0                     | 139.8                   |
| [YOLO26x-seg](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26x-seg.pt) | 640                         | 56.5                            | 47.0                             | 787.0 ± 6.8                          | 16.4 ± 0.1                                | 62.8                     | 313.5                   |

- **mAP<sup>val</sup>** values are for single-model single-scale on the [COCO val2017](https://cocodataset.org/) dataset. See [YOLO Performance Metrics](https://docs.ultralytics.com/guides/yolo-performance-metrics) for details. <br>Reproduce with `yolo val segment data=coco.yaml device=0`
- **Speed** metrics are averaged over COCO val images using an [Amazon EC2 P4d](https://aws.amazon.com/ec2/instance-types/p4/) instance. CPU speeds measured with [ONNX](https://onnx.ai/) export. GPU speeds measured with [TensorRT](https://developer.nvidia.com/tensorrt) export. <br>Reproduce with `yolo val segment data=coco.yaml batch=1 device=0|cpu`

</details>

<details><summary>Semantic Segmentation (Cityscapes)</summary>

See the [Semantic Segmentation Docs](https://docs.ultralytics.com/tasks/semantic) for usage examples. These models are trained on [Cityscapes](https://docs.ultralytics.com/datasets/semantic/cityscapes), including 19 classes.

| Model                                                                                        | size<br><sup>(pixels)</sup> | mIoU<sup>val</sup> | Speed<br><sup>RTX3090 PyTorch<br>(ms)</sup> | params<br><sup>(M)</sup> | FLOPs<br><sup>(B)</sup> |
| -------------------------------------------------------------------------------------------- | --------------------------- | ------------------ | ------------------------------------------- | ------------------------ | ----------------------- |
| [YOLO26n-sem](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26n-sem.pt) | 1024 &times; 2048           | 78.3               | 4.4 ± 0.0                                   | 1.6                      | 22.7                    |
| [YOLO26s-sem](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26s-sem.pt) | 1024 &times; 2048           | 80.8               | 8.4 ± 0.0                                   | 6.5                      | 88.8                    |
| [YOLO26m-sem](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26m-sem.pt) | 1024 &times; 2048           | 82.0               | 19.9 ± 0.1                                  | 14.3                     | 304.5                   |
| [YOLO26l-sem](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26l-sem.pt) | 1024 &times; 2048           | 82.9               | 26.5 ± 0.1                                  | 17.9                     | 384.7                   |
| [YOLO26x-sem](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26x-sem.pt) | 1024 &times; 2048           | 83.6               | 48.9 ± 0.2                                  | 40.2                     | 861.7                   |

- **mIoU<sup>val</sup>** values are for single-model single-scale on the [Cityscapes](https://www.cityscapes-dataset.com/) validation set. <br>Reproduce with `yolo semantic val data=cityscapes.yaml device=0 imgsz=2048`
- **Speed** metrics are averaged over Cityscapes validation images using an RTX3090 instance. <br>Reproduce with `yolo semantic val data=cityscapes.yaml batch=1 device=0|cpu imgsz=2048`

</details>

<details><summary>Classification (ImageNet)</summary>

Consult the [Classification Docs](https://docs.ultralytics.com/tasks/classify) for usage examples. These models are trained on [ImageNet](https://docs.ultralytics.com/datasets/classify/imagenet), covering 1000 classes.

| Model                                                                                        | size<br><sup>(pixels)</sup> | acc<br><sup>top1</sup> | acc<br><sup>top5</sup> | Speed<br><sup>CPU ONNX<br>(ms)</sup> | Speed<br><sup>T4 TensorRT10<br>(ms)</sup> | params<br><sup>(M)</sup> | FLOPs<br><sup>(B) at 224</sup> |
| -------------------------------------------------------------------------------------------- | --------------------------- | ---------------------- | ---------------------- | ------------------------------------ | ----------------------------------------- | ------------------------ | ------------------------------ |
| [YOLO26n-cls](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26n-cls.pt) | 224                         | 71.4                   | 90.1                   | 5.0 ± 0.3                            | 1.1 ± 0.0                                 | 2.8                      | 0.5                            |
| [YOLO26s-cls](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26s-cls.pt) | 224                         | 76.0                   | 92.9                   | 7.9 ± 0.2                            | 1.3 ± 0.0                                 | 6.7                      | 1.6                            |
| [YOLO26m-cls](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26m-cls.pt) | 224                         | 78.1                   | 94.2                   | 17.2 ± 0.4                           | 2.0 ± 0.0                                 | 11.6                     | 4.9                            |
| [YOLO26l-cls](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26l-cls.pt) | 224                         | 79.0                   | 94.6                   | 23.2 ± 0.3                           | 2.8 ± 0.0                                 | 14.1                     | 6.2                            |
| [YOLO26x-cls](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26x-cls.pt) | 224                         | 79.9                   | 95.0                   | 41.4 ± 0.9                           | 3.8 ± 0.0                                 | 29.6                     | 13.6                           |

- **acc** values represent model accuracy on the [ImageNet](https://www.image-net.org/) dataset validation set. <br>Reproduce with `yolo val classify data=path/to/ImageNet device=0`
- **Speed** metrics are averaged over ImageNet val images using an [Amazon EC2 P4d](https://aws.amazon.com/ec2/instance-types/p4/) instance. CPU speeds measured with [ONNX](https://onnx.ai/) export. GPU speeds measured with [TensorRT](https://developer.nvidia.com/tensorrt) export. <br>Reproduce with `yolo val classify data=path/to/ImageNet batch=1 device=0|cpu`

</details>

<details><summary>Pose (COCO)</summary>

See the [Pose Estimation Docs](https://docs.ultralytics.com/tasks/pose) for usage examples. These models are trained on [COCO-Pose](https://docs.ultralytics.com/datasets/pose/coco), focusing on the 'person' class.

| Model                                                                                          | size<br><sup>(pixels)</sup> | mAP<sup>pose<br>50-95(e2e)</sup> | mAP<sup>pose<br>50(e2e)</sup> | Speed<br><sup>CPU ONNX<br>(ms)</sup> | Speed<br><sup>T4 TensorRT10<br>(ms)</sup> | params<br><sup>(M)</sup> | FLOPs<br><sup>(B)</sup> |
| ---------------------------------------------------------------------------------------------- | --------------------------- | -------------------------------- | ----------------------------- | ------------------------------------ | ----------------------------------------- | ------------------------ | ----------------------- |
| [YOLO26n-pose](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26n-pose.pt) | 640                         | 57.2                             | 83.3                          | 40.3 ± 0.5                           | 1.8 ± 0.0                                 | 2.9                      | 7.5                     |
| [YOLO26s-pose](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26s-pose.pt) | 640                         | 63.0                             | 86.6                          | 85.3 ± 0.9                           | 2.7 ± 0.0                                 | 10.4                     | 23.9                    |
| [YOLO26m-pose](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26m-pose.pt) | 640                         | 68.8                             | 89.6                          | 218.0 ± 1.5                          | 5.0 ± 0.1                                 | 21.5                     | 73.1                    |
| [YOLO26l-pose](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26l-pose.pt) | 640                         | 70.4                             | 90.5                          | 275.4 ± 2.4                          | 6.5 ± 0.1                                 | 25.9                     | 91.3                    |
| [YOLO26x-pose](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26x-pose.pt) | 640                         | 71.6                             | 91.6                          | 565.4 ± 3.0                          | 12.2 ± 0.2                                | 57.6                     | 201.7                   |

- **mAP<sup>val</sup>** values are for single-model single-scale on the [COCO Keypoints val2017](https://docs.ultralytics.com/datasets/pose/coco) dataset. See [YOLO Performance Metrics](https://docs.ultralytics.com/guides/yolo-performance-metrics) for details. <br>Reproduce with `yolo val pose data=coco-pose.yaml device=0`
- **Speed** metrics are averaged over COCO val images using an [Amazon EC2 P4d](https://aws.amazon.com/ec2/instance-types/p4/) instance. CPU speeds measured with [ONNX](https://onnx.ai/) export. GPU speeds measured with [TensorRT](https://developer.nvidia.com/tensorrt) export. <br>Reproduce with `yolo val pose data=coco-pose.yaml batch=1 device=0|cpu`

</details>

<details><summary>Oriented Bounding Boxes (DOTAv1)</summary>

Check the [OBB Docs](https://docs.ultralytics.com/tasks/obb) for usage examples. These models are trained on [DOTAv1](https://docs.ultralytics.com/datasets/obb/dota-v2#dota-v10), including 15 classes.

| Model                                                                                        | size<br><sup>(pixels)</sup> | mAP<sup>test<br>50-95(e2e)</sup> | mAP<sup>test<br>50(e2e)</sup> | Speed<br><sup>CPU ONNX<br>(ms)</sup> | Speed<br><sup>T4 TensorRT10<br>(ms)</sup> | params<br><sup>(M)</sup> | FLOPs<br><sup>(B)</sup> |
| -------------------------------------------------------------------------------------------- | --------------------------- | -------------------------------- | ----------------------------- | ------------------------------------ | ----------------------------------------- | ------------------------ | ----------------------- |
| [YOLO26n-obb](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26n-obb.pt) | 1024                        | 52.4                             | 78.9                          | 97.7 ± 0.9                           | 2.8 ± 0.0                                 | 2.5                      | 14.0                    |
| [YOLO26s-obb](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26s-obb.pt) | 1024                        | 54.8                             | 80.9                          | 218.0 ± 1.4                          | 4.9 ± 0.1                                 | 9.8                      | 55.1                    |
| [YOLO26m-obb](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26m-obb.pt) | 1024                        | 55.3                             | 81.0                          | 579.2 ± 3.8                          | 10.2 ± 0.3                                | 21.2                     | 183.3                   |
| [YOLO26l-obb](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26l-obb.pt) | 1024                        | 56.2                             | 81.6                          | 735.6 ± 3.1                          | 13.0 ± 0.2                                | 25.6                     | 230.0                   |
| [YOLO26x-obb](https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26x-obb.pt) | 1024                        | 56.7                             | 81.7                          | 1485.7 ± 11.5                        | 30.5 ± 0.9                                | 57.6                     | 516.5                   |

- **mAP<sup>test</sup>** values are for single-model multiscale performance on the [DOTAv1 test set](https://captain-whu.github.io/DOTA/dataset.html). <br>Reproduce by `yolo val obb data=DOTAv1.yaml device=0 split=test` and submit merged results to the [DOTA evaluation server](https://captain-whu.github.io/DOTA/evaluation.html).
- **Speed** metrics are averaged over [DOTAv1 val images](https://docs.ultralytics.com/datasets/obb/dota-v2#dota-v10) using an [Amazon EC2 P4d](https://aws.amazon.com/ec2/instance-types/p4/) instance. CPU speeds measured with [ONNX](https://onnx.ai/) export. GPU speeds measured with [TensorRT](https://developer.nvidia.com/tensorrt) export. <br>Reproduce by `yolo val obb data=DOTAv1.yaml batch=1 device=0|cpu`

</details>

## 🧩 Integrations

Our key integrations with leading AI platforms extend the functionality of Ultralytics' offerings, enhancing tasks like dataset labeling, training, visualization, and model management. Discover how Ultralytics, in collaboration with partners like [Weights & Biases](https://docs.ultralytics.com/integrations/weights-biases), [Comet ML](https://docs.ultralytics.com/integrations/comet), [Roboflow](https://docs.ultralytics.com/integrations/roboflow), and [Intel OpenVINO](https://docs.ultralytics.com/integrations/openvino), can optimize your AI workflow. Explore more at [Ultralytics Integrations](https://docs.ultralytics.com/integrations).

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## 🤝 Contribute

We thrive on community collaboration! Ultralytics YOLO wouldn't be the SOTA framework it is without contributions from developers like you. Please see our [Contributing Guide](https://docs.ultralytics.com/help/contributing) to get started. We also welcome your feedback—share your experience by completing our [Survey](https://www.ultralytics.com/survey?utm_source=github&utm_medium=social&utm_campaign=Survey). A huge **Thank You** 🙏 to everyone who contributes!

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## 📜 License

Ultralytics offers two licensing options to suit different needs:

- **AGPL-3.0 License**: This [OSI-approved](https://opensource.org/license/agpl-3.0) open-source license is perfect for students, researchers, and enthusiasts. It encourages open collaboration and knowledge sharing. See the [LICENSE](https://github.com/ultralytics/ultralytics/blob/main/LICENSE) file for full details.
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