You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "find_next_greater_element", "description": "Finds the next greater element for each element in a list.", "parameters": {"nums": {"description": "The list of numbers.", "type": "List[int]"}}}, {"name": "bacterial_growth", "description": "Calculates the bacterial population after a given time based on the initial population and growth rate.", "parameters": {"initial_population": {"description": "The initial bacterial population.", "type": "int", "default": 20}, "growth_rate": {"description": "The growth rate per unit time.", "type": "float", "default": 20}, "time": {"description": "The time elapsed.", "type": "float"}, "doubling_time": {"description": "The doubling time of the bacteria in minutes. Defaults to 20.", "type": "float, optional"}}}]
Find the next greater element for each number in the list [1, 2, 3, 2, 1] and calculate the final bacterial population starting with 100 bacteria, a growth rate of 0.5, and a time of 10 minutes using the default doubling time.
user
assistant
[{"name": "find_next_greater_element", "arguments": {"nums": [1, 2, 3, 2, 1]}}, {"name": "bacterial_growth", "arguments": {"initial_population": 100, "growth_rate": 0.5, "time": 10}}]