#![allow(non_snake_case)]
#![allow(unused_imports)]
//use itertools::Itertools;
//use proconio::input;
//use proconio::marker::*;
use std::cmp::Reverse;
use std::collections::*;

fn main() {
    input! {
        n:usize,
        s:chars,
        t:chars,
        q:usize,
        query:[(char,usize1,u8);q],
    }

    let mut noteq = BTreeSet::new();
    let mut s = s.iter().map(|&si| si as u8 - b'0').collect::<Vec<_>>();
    let mut t = t.iter().map(|&si| si as u8 - b'0').collect::<Vec<_>>();

    for i in 0..n {
        if s[i] != t[i] {
            noteq.insert(i);
        }
    }

    for (c, x, y) in query {
        if s[x] == t[x] {
            if s[x] != y {
                noteq.insert(x);
            }
        } else {
            if (c == 'S' && y == t[x]) || (c == 'T' && s[x] == y) {
                noteq.remove(&x);
            }
        }
        if c == 'S' {
            s[x] = y;
        } else {
            t[x] = y;
        }
        let f = noteq.first();
        let ans = if let Some(&digit) = f {
            if s[digit] > t[digit] {
                '>'
            } else {
                '<'
            }
        } else {
            '='
        };

        println!("{}", ans);
    }
}

mod input {
    #[macro_export]
    macro_rules! input {
        (source = $s:expr, $($r:tt)*) => {
            let mut iter = $s.split_whitespace();
            input_inner!{iter, $($r)*}
        };
        ($($r:tt)*) => {
            let s = {
                use std::io::Read;
                let mut s = String::new();
                std::io::stdin().read_to_string(&mut s).unwrap();
                s
            };
            let mut iter = s.split_whitespace();
            input_inner!{iter, $($r)*}
        };
    }

    #[macro_export]
    macro_rules! input_inner {
        ($iter:expr) => {};
        ($iter:expr, ) => {};

        ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
            let $var = read_value!($iter, $t);
            input_inner!{$iter $($r)*}
        };
    }

    #[macro_export]
    macro_rules! read_value {
        ($iter:expr, ( $($t:tt),* )) => {
            ( $(read_value!($iter, $t)),* )
        };

        ($iter:expr, [ $t:tt ; $len:expr ]) => {
            (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
        };

        ($iter:expr, chars) => {
            read_value!($iter, String).chars().collect::<Vec<char>>()
        };

        ($iter:expr, usize1) => {
            read_value!($iter, usize) - 1
        };

        ($iter:expr, $t:ty) => {
            $iter.next().unwrap().parse::<$t>().expect("Parse error")
        };
    }
}