### Create a Submission [POST]
Creates new submission. Created submission waits in queue to be processed. On successful
creation, you are returned submission token which can be used to [check submission status](#submissions-submission-get).

If submission's `source_code`, `stdin` or `expected_output` contains non printable characters, or
characters which cannot be sent with JSON, then set `base64_encoded` parameter to `true` and
send these attributes Base64 encoded. Your responsibility is to encode each of mentioned attributes
(`source_code`, `stdin` and `expected_output`) even if just one of them contains non printable
characters. By default, this parameter is set to `false` and Judge0 assumes you are sending plain text data.

By default you are returned submission token on successful submission creation. With this token you can [check submission status](#submission-submission-get).
Instead of checking submission status by making another request, you can set the `wait` query parameter to `true` which will enable you to get submission status immediately as part of response to the request you made.
Please note that this feature may or may not be enabled on all Judge0 hosts. So before using this feature please check [configuration](#system-and-configuration-configuration-info-get) of Judge0 you are using. On an [official Judge0](https://api.judge0.com) this feature **is not** enabled.

::: note
<h4>Note</h4>
* We **do not** recommend the use of `wait=true` feature because it does not scale well.
:::

+ Parameters
    + base64_encoded = `false` (optional, boolean, `false`) ... Set to `true` if you want to send Base64 encoded data to Judge0.
    + wait = `false` (optional, boolean, `false`) ... Set to `true` to immediately get submission result.

+ Request (application/json)
    {
        "source_code": "#include <stdio.h>\n\nint main(void) {\n  char name[10];\n  scanf(\"%s\", name);\n  printf(\"hello, %s\\n\", name);\n  return 0;\n}",
        "language_id": 4,
        "stdin": "world"
    }

+ Response 201 (application/json)
    {
        "token": "d85cd024-1548-4165-96c7-7bc88673f194"
    }


+ Request (application/json)
    {
        "source_code": "#include <stdio.h>\n\nint main(void) {\n  char name[10];\n  scanf(\"%s\", name);\n  printf(\"hello, %s\\n\", name);\n  return 0;\n}"
    }

+ Response 422 (application/json)
    {
        "language_id": [
            "can't be blank"
        ]
    }


+ Request (application/json)
    {
        "source_code": "#include <stdio.h>\n\nint main(void) {\n  char name[10];\n  scanf(\"%s\", name);\n  printf(\"hello, %s\\n\", name);\n  return 0;\n}",
        "language_id": 150000,
        "stdin": "world",
        "expected_output": "hello, world"
    }

+ Response 422 (application/json)
    {
        "language_id": [
            "language with id 150000 doesn't exist"
        ]
    }


+ Request (application/json)
    {
        "source_code": "#include <stdio.h>\n\nint main(void) {\n  char name[10];\n  scanf(\"%s\", name);\n  printf(\"hello, %s\\n\", name);\n  return 0;\n}",
        "language_id": 4,
        "number_of_runs": 1,
        "stdin": "Judge0",
        "expected_output": "hello, Judge0",
        "cpu_time_limit": 1,
        "cpu_extra_time": 0.5,
        "wall_time_limit": 100000,
        "memory_limit": 128000,
        "stack_limit": 128000,
        "enable_per_process_and_thread_time_limit": false,
        "enable_per_process_and_thread_memory_limit": false,
        "max_file_size": 1024
    }

+ Response 422 (application/json)
    {
        "wall_time_limit": [
            "must be less than or equal to 150"
        ]
    }


+ Request (appliction/json)
    Sending Base64 encoded `source_code` and `stdin`. Note that in this request `base64_encoded` query parameter **must** be
    set to `true`.
    + Body
        {
            "source_code": "I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CiAgY2hhciBuYW1lWzEwXTsKICBzY2FuZigiJXMiLCBuYW1lKTsKICBwcmludGYoImhlbGxvLCAlc1xuIiwgbmFtZSk7CiAgcmV0dXJuIDA7Cn0=",
            "language_id": 4,
            "input": "SnVkZ2Uw"
        }

+ Response 201 (application/json)
    {
        "token": "f3fe0215-72f3-4fe6-97f5-353df6682db4"
    }

+ Request (application/json)
    Creating a submission with `wait=true` that results with one or more attributes that cannot be serialized to JSON without Base64 encoding.
    + Body
        {
            "language_id": 70,
            "source_code": "print(\"\\xFE\")"
        }

+ Response 201 (application/json)
    {
        "token": "fcd0de6d-ee52-4a9d-8a00-6e0d98d394cf",
        "error": "some attributes for this submission cannot be converted to UTF-8, use base64_encoded=true query parameter"
    }

+ Request (application/json)
    Waiting for submission to finish. Note that in this request `wait` query parameter **must** be set to `true`.
    + Body
        {
            "source_code": "#include <stdio.h>\n\nint main(void) {\n  char name[10];\n  scanf(\"%s\", name);\n  printf(\"hello, %s\\n\", name);\n  return 0;\n}",
            "language_id": "4",
            "stdin": "Judge0",
            "expected_output": "hello, Judge0"
        }

+ Response 201 (application/json)
    {
        "stdout": "hello, Judge0\n",
        "time": "0.001",
        "memory": 380,
        "stderr": null,
        "token": "eb0dd001-66db-47f4-8a69-b736c9bc23f6",
        "compile_output": null,
        "message": null,
        "status": {
            "id": 3,
            "description": "Accepted"
        }
    }

+ Response 400 (application/json)
    If wait is not allowed.
    + Body
        {
            "error": "wait not allowed"
        }

+ Response 503 (application/json)
    If submission queue is full.
    + Body
        {
            "error": "queue is full"
        }

<!-- include(../_unauthenticated.md) -->