Programming in Python OPPE 1: May 2026, Set 1 (May 2026 term)

Write a function traffic_signal(vehicle_type, signal, emergency) that tells a road user what to do.

• If emergency is True and vehicle_type is "ambulance", return "Proceed Carefully".
• Otherwise it depends on signal:
  • "red": return "Stop".
  • "yellow": return "Slow Down".
  • "green": return "Cross" if vehicle_type is "pedestrian", and "Go" for any other vehicle type.
• For any other signal, return "Invalid Signal".

NOTE: This is a function type question, you don't have to take input or print the output, just have to complete the required function definition.

Example

traffic_signal("car", "red", False) -> 'Stop'
traffic_signal("pedestrian", "green", False) -> 'Cross'

Your task

Implement this function:

def traffic_signal(vehicle_type: str, signal: str, emergency: bool) -> str:

Write the function only — the arguments are read for you and the return value is printed automatically.

Arguments arrive as one Python literal per line, in this order: vehicle_type, signal, emergency.

Example

Input

"car"
"red"
False

Output

'Stop'

The list words has exactly four strings. Write a function join_even_index_strings(words) that returns one string made by joining the strings at the even indices, which are index 0 and index 2, in this order, with nothing in between.

NOTE: This is a function type question, you don't have to take input or print the output, just have to complete the required function definition.

Example

join_even_index_strings(["apple", "banana", "cherry", "mango"]) -> 'applecherry'
join_even_index_strings(["red", "green", "blue", "yellow"]) -> 'redblue'

Your task

Implement this function:

def join_even_index_strings(words: list) -> str:

Write the function only — the arguments are read for you and the return value is printed automatically.

Arguments arrive as one Python literal per line, in this order: words.

Example

Input

["apple", "banana", "cherry", "mango"]

Output

'applecherry'

Write a function make_dict_from_elems_in_index(keys, values, index) that returns a dictionary with just one entry: the key is the element of keys at position index and the value is the element of values at position index. The index is valid for both lists, and it can be negative. The two lists can have different lengths.

NOTE: This is a function type question, you don't have to take input or print the output, just have to complete the required function definition.

Example

make_dict_from_elems_in_index(['apple', 'banana', 'cherry'], [10, 20, 30, 40], 1) -> {'banana': 20}
make_dict_from_elems_in_index(['apple', 'banana', 'cherry'], [10, 20, 30, 40], -1) -> {'cherry': 40}

Your task

Implement this function:

def make_dict_from_elems_in_index(keys: list, values: list, index: int) -> dict:

Write the function only — the arguments are read for you and the return value is printed automatically.

Arguments arrive as one Python literal per line, in this order: keys, values, index.

Example

Input

['apple', 'banana', 'cherry']
[10, 20, 30, 40]
1

Output

{'banana': 20}