// The code below is a stub. Just enough to satisfy the compiler.
// In order to pass the tests you can add-to or change any of this code.

#[derive(Debug)]
pub struct Duration {
	seconds: f64,
}

impl From<u64> for Duration {
	fn from(s: u64) -> Self {
		Duration { seconds: s as f64 }
	}
}

pub trait Planet {
	fn years_during(d: &Duration) -> f64;
}

macro_rules! impl_planets {
	($($planet:ident : $period:literal),*) => {$(
		pub struct $planet;
		impl Planet for $planet {
			fn years_during(d: &Duration) -> f64 {
				d.seconds / 31557600.0 / $period
			}
		}
	)*};
}

impl_planets! {
	Mercury: 0.2408467,
	Venus: 0.61519726,
	Earth: 1.0,
	Mars: 1.8808158,
	Jupiter: 11.862615,
	Saturn: 29.447498,
	Uranus: 84.016846,
	Neptune: 164.79132
}