{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "$defs": {
        "Person": {
            "anyOf": [
                {
                    "type": "string"
                },
                {
                    "type": "object",
                    "properties": {
                        "email": {
                            "type": "string"
                        },
                        "kattis": {
                            "type": "string"
                        },
                        "name": {
                            "type": "string"
                        },
                        "orcid": {
                            "type": "string"
                        }
                    },
                    "required": [
                        "name"
                    ]
                }
            ]
        },
        "Persons": {
            "anyOf": [
                {
                    "$ref": "#/$defs/Person"
                },
                {
                    "type": "array",
                    "items": {
                        "$ref": "#/$defs/Person"
                    },
                    "prefixItems": [
                        {
                            "$ref": "#/$defs/Person"
                        }
                    ],
                    "minLength": 1
                }
            ]
        },
        "ProgrammingLanguage": {
            "enum": [
                "ada",
                "algol68",
                "apl",
                "bash",
                "c",
                "cgmp",
                "cobol",
                "cpp",
                "cppgmp",
                "crystal",
                "csharp",
                "d",
                "dart",
                "elixir",
                "erlang",
                "forth",
                "fortran",
                "fsharp",
                "gerbil",
                "go",
                "haskell",
                "java",
                "javaalgs4",
                "javascript",
                "julia",
                "kotlin",
                "lisp",
                "lua",
                "modula2",
                "nim",
                "objectivec",
                "ocaml",
                "octave",
                "odin",
                "pascal",
                "perl",
                "php",
                "prolog",
                "python2",
                "python3",
                "python3numpy",
                "racket",
                "ruby",
                "rust",
                "scala",
                "simula",
                "smalltalk",
                "snobol",
                "swift",
                "typescript",
                "visualbasic",
                "zig"
            ]
        },
        "Source": {
            "anyOf": [
                {
                    "type": "string"
                },
                {
                    "type": "object",
                    "properties": {
                        "name": {
                            "type": "string"
                        },
                        "url": {
                            "type": "string"
                        }
                    },
                    "required": [
                        "name"
                    ]
                }
            ]
        },
        "Type": {
            "enum": [
                "pass-fail",
                "scoring",
                "multi-pass",
                "interactive",
                "submit-answer"
            ]
        },
        "Valid": {
            "type": "string"
        }
    },
    "type": "object",
    "additionalProperties": false,
    "properties": {
        "allow_file_writing": {
            "enum": [
                false,
                true
            ]
        },
        "constants": {
            "type": "object",
            "patternProperties": {
                "^[a-zA-Z_][a-zA-Z0-9_]*$": {
                    "anyOf": [
                        {
                            "type": "integer"
                        },
                        {
                            "type": "number"
                        },
                        {
                            "type": "string"
                        },
                        {
                            "type": "object",
                            "additionalProperties": true,
                            "properties": {
                                "value": {
                                    "anyOf": [
                                        {
                                            "type": "integer"
                                        },
                                        {
                                            "type": "number"
                                        },
                                        {
                                            "type": "string"
                                        }
                                    ]
                                }
                            },
                            "required": [
                                "value"
                            ]
                        }
                    ]
                }
            }
        },
        "credits": {
            "anyOf": [
                {
                    "type": "string"
                },
                {
                    "type": "object",
                    "additionalProperties": true,
                    "properties": {
                        "authors": {
                            "$ref": "#/$defs/Persons"
                        },
                        "translators": {
                            "type": "object",
                            "patternProperties": {
                                "^[a-z]{2,3}(-[A-Z]{2})?$": {
                                    "$ref": "#/$defs/Persons"
                                }
                            }
                        }
                    },
                    "required": [
                        "authors"
                    ]
                }
            ]
        },
        "embargo_until": {
            "anyOf": [
                {
                    "type": "string",
                    "format": "date"
                },
                {
                    "type": "string"
                }
            ]
        },
        "keywords": {
            "type": "array",
            "items": {
                "type": "string"
            }
        },
        "languages": {
            "anyOf": [
                {
                    "const": "all"
                },
                {
                    "type": "array",
                    "items": {
                        "$ref": "#/$defs/ProgrammingLanguage"
                    },
                    "prefixItems": [
                        {
                            "$ref": "#/$defs/ProgrammingLanguage"
                        }
                    ],
                    "minLength": 1
                }
            ]
        },
        "license": {
            "enum": [
                "unknown",
                "public domain",
                "cc0",
                "cc by",
                "cc by-sa",
                "educational",
                "permission"
            ]
        },
        "limits": {
            "type": "object",
            "additionalProperties": true,
            "properties": {
                "time_limit": {
                    "type": "number",
                    "anyOf": [
                        {
                            "type": "number"
                        },
                        {
                            "type": "integer"
                        }
                    ],
                    "exclusiveMinimum": 0
                },
                "time_multipliers": {
                    "type": "object",
                    "properties": {
                        "ac_to_time_limit": {
                            "type": "number"
                        },
                        "time_limit_to_tle": {
                            "type": "number"
                        }
                    }
                },
                "time_resolution": {
                    "type": "number"
                }
            }
        },
        "name": {
            "anyOf": [
                {
                    "type": "string"
                },
                {
                    "type": "object",
                    "patternProperties": {
                        "^[a-z]{2,3}(-[A-Z]{2})?$": {
                            "type": "string"
                        }
                    }
                }
            ]
        },
        "problem_format_version": {
            "anyOf": [
                {
                    "type": "string",
                    "pattern": "^[0-9]{4}-[0-9]{2}(-draft)?$"
                },
                {
                    "const": "draft"
                },
                {
                    "const": "legacy"
                },
                {
                    "const": "legacy-icpc"
                }
            ]
        },
        "rights_owner": {
            "$ref": "#/$defs/Persons"
        },
        "source": {
            "anyOf": [
                {
                    "$ref": "#/$defs/Source"
                },
                {
                    "type": "array",
                    "items": {
                        "$ref": "#/$defs/Source"
                    },
                    "prefixItems": [
                        {
                            "$ref": "#/$defs/Source"
                        }
                    ],
                    "minLength": 1
                }
            ]
        },
        "type": {
            "anyOf": [
                {
                    "const": "pass-fail"
                },
                {
                    "$ref": "#/$defs/Type"
                },
                {
                    "type": "array",
                    "items": {
                        "$ref": "#/$defs/Type"
                    },
                    "prefixItems": [
                        {
                            "$ref": "#/$defs/Type"
                        }
                    ],
                    "minLength": 1
                }
            ]
        },
        "uuid": {
            "$ref": "#/$defs/Valid"
        },
        "version": {
            "type": "string"
        }
    },
    "required": [
        "name",
        "problem_format_version",
        "uuid"
    ]
}