{
  "task": {
    "id": "case_53",
    "name": "increment_odd_indices",
    "summary": "Increment elements at odd indices by 1",
    "examples": [
      {
        "input": [
          "BOS",
          2,
          4,
          2,
          6,
          4,
          8,
          6,
          1,
          3
        ],
        "output": [
          "BOS",
          2,
          5,
          2,
          7,
          4,
          9,
          6,
          2,
          3
        ]
      },
      {
        "input": [
          "BOS",
          4,
          1,
          7,
          5,
          1,
          4,
          0,
          9,
          5
        ],
        "output": [
          "BOS",
          4,
          2,
          7,
          6,
          1,
          5,
          0,
          10,
          5
        ]
      },
      {
        "input": [
          "BOS",
          10,
          10,
          7,
          4,
          3,
          7,
          7,
          2,
          5
        ],
        "output": [
          "BOS",
          10,
          11,
          7,
          5,
          3,
          8,
          7,
          3,
          5
        ]
      },
      {
        "input": [
          "BOS",
          8,
          0,
          10,
          10,
          9,
          2,
          6,
          3,
          8
        ],
        "output": [
          "BOS",
          8,
          1,
          10,
          11,
          9,
          3,
          6,
          4,
          8
        ]
      },
      {
        "input": [
          "BOS",
          6,
          3,
          10,
          7,
          4,
          6,
          9,
          2,
          6
        ],
        "output": [
          "BOS",
          6,
          4,
          10,
          8,
          4,
          7,
          9,
          3,
          6
        ]
      }
    ],
    "is_categorical": true
  },
  "program": "odd_index_marker = rasp.Map(lambda x: x % 2, rasp.indices).named(\"odd_index_marker\")\nincremented_elements = rasp.SequenceMap(lambda elem, mark: elem + mark, rasp.tokens, odd_index_marker).named(\"incremented_elements\")\nreturn incremented_elements",
  "components": [
    {
      "id": "L0_MLP",
      "hook": "blocks.0.mlp.hook_post",
      "role": {
        "tag": "MAPPER",
        "note": "Computes the parity of each position's index (index mod 2) to produce a per-position binary value used as an increment signal."
      },
      "rasp_vars": [
        "odd_index_marker"
      ],
      "labels": [
        "odd_index_marker_2"
      ]
    },
    {
      "id": "L1_MLP",
      "hook": "blocks.1.mlp.hook_post",
      "role": {
        "tag": "COMBINER",
        "note": "Adds the odd-index marker to each element so only odd positions are incremented."
      },
      "rasp_vars": [
        "incremented_elements"
      ],
      "labels": [
        "incremented_elements_1"
      ]
    }
  ]
}