## Generated by Codox

# Propeller 0.3.0

# propeller.problems.PSB2.snow-day

SNOW DAY from PSB2

Given an integer representing a number of hours and 3 floats representing how much snow is on the ground, the rate of snow fall, and the proportion of snow melting per hour, return the amount of snow on the ground after the amount of hours given. Each hour is considered a discrete event of adding snow and then melting, not a continuous process.

Source: https://arxiv.org/pdf/2106.06086.pdf

### -main

`(-main & args)`

Runs propel-gp, giving it a map of arguments.

### error-function

`(error-function argmap data individual)`

Finds the behaviors and errors of an individual: Error is 0 if the value and the program’s selected behavior match, or 1 if they differ, or 1000000 if no behavior is produced. The behavior is here defined as the final top item on the FLOAT stack.

### instructions

Stack-specific instructions, input instructions, close, and constants

### map-vals-input

`(map-vals-input i)`

Returns all the input values of a map

### map-vals-output

`(map-vals-output i)`

Returns the output values of a map

### train-and-test-data

Data taken from https://zenodo.org/record/5084812