fn main() {
    let (r, w) = (std::io::stdin(), std::io::stdout());
    let mut sc = IO::new(r.lock(), w.lock());

    let n: usize = sc.read();
    let mut left = Edge::new();
    let mut right = Edge::new();
    let mut head = Edge::new();
    let mut tail = Edge::new();

    for _ in 0..n {
        let x: f64 = sc.read();
        let y: f64 = sc.read();
        let d = sc.read::<String>();
        match d.as_str() {
            "R" => {
                right.increasing_max.set_max(x);
                left.decreasing_max.set_max(-x);
                head.static_max.set_max(y);
                tail.static_max.set_max(-y);
            }
            "L" => {
                right.decreasing_max.set_max(x);
                left.increasing_max.set_max(-x);
                head.static_max.set_max(y);
                tail.static_max.set_max(-y);
            }
            "U" => {
                head.increasing_max.set_max(y);
                tail.decreasing_max.set_max(-y);
                right.static_max.set_max(x);
                left.static_max.set_max(-x);
            }
            "D" => {
                head.decreasing_max.set_max(y);
                tail.increasing_max.set_max(-y);
                right.static_max.set_max(x);
                left.static_max.set_max(-x);
            }
            _ => unreachable!(),
        }
    }

    let mut events = vec![0.0];
    events.extend(left.get_event());
    events.extend(right.get_event());
    events.extend(head.get_event());
    events.extend(tail.get_event());

    let mut min = std::f64::MAX;
    for event in events.into_iter() {
        if event < 0.0 {
            continue;
        }
        let left = left.get_max(event).unwrap();
        let right = right.get_max(event).unwrap();
        let head = head.get_max(event).unwrap();
        let tail = tail.get_max(event).unwrap();

        let h = head + tail;
        let w = left + right;
        min = min.min(h * w);
    }
    println!("{}", min);
}

struct Edge {
    increasing_max: Option<f64>,
    decreasing_max: Option<f64>,
    static_max: Option<f64>,
}

impl Edge {
    fn new() -> Self {
        Edge {
            increasing_max: None,
            decreasing_max: None,
            static_max: None,
        }
    }

    fn get_event(&self) -> Vec<f64> {
        let mut result = vec![];
        if let (Some(i), Some(s)) = (self.increasing_max, self.static_max) {
            result.push(s - i);
        }
        if let (Some(d), Some(s)) = (self.decreasing_max, self.static_max) {
            result.push(d - s);
        }
        if let (Some(d), Some(i)) = (self.decreasing_max, self.increasing_max) {
            result.push((d - i) / 2.0);
        }
        result
    }

    fn get_max(&self, time: f64) -> Option<f64> {
        let mut result = None;
        if let Some(s) = self.static_max {
            result.set_max(s);
        }
        if let Some(s) = self.decreasing_max {
            result.set_max(s - time);
        }
        if let Some(s) = self.increasing_max {
            result.set_max(s + time);
        }
        result
    }
}

trait SetMax<T> {
    fn set_max(&mut self, v: T);
}

impl SetMax<f64> for Option<f64> {
    fn set_max(&mut self, v: f64) {
        match self.clone() {
            Some(p) => {
                if p < v {
                    *self = Some(v)
                }
            }
            None => *self = Some(v),
        }
    }
}

pub struct IO<R, W: std::io::Write>(R, std::io::BufWriter<W>);

impl<R: std::io::Read, W: std::io::Write> IO<R, W> {
    pub fn new(r: R, w: W) -> Self {
        IO(r, std::io::BufWriter::new(w))
    }
    pub fn write<S: ToString>(&mut self, s: S) {
        use std::io::Write;
        self.1.write(s.to_string().as_bytes()).unwrap();
    }
    pub fn read<T: std::str::FromStr>(&mut self) -> T {
        use std::io::Read;
        let buf = self
            .0
            .by_ref()
            .bytes()
            .map(|b| b.unwrap())
            .skip_while(|&b| b == b' ' || b == b'\n' || b == b'\r' || b == b'\t')
            .take_while(|&b| b != b' ' && b != b'\n' && b != b'\r' && b != b'\t')
            .collect::<Vec<_>>();
        unsafe { std::str::from_utf8_unchecked(&buf) }
            .parse()
            .ok()
            .expect("Parse error.")
    }
    pub fn vec<T: std::str::FromStr>(&mut self, n: usize) -> Vec<T> {
        (0..n).map(|_| self.read()).collect()
    }
    pub fn chars(&mut self) -> Vec<char> {
        self.read::<String>().chars().collect()
    }
}


Measured memory_bytes: 4352