import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        char[] s = sc.next().toCharArray();
        char[] t = sc.next().toCharArray();
        TreeSet<Integer> diff = new TreeSet<>();
        for (int i = 0; i < n; i++) {
            if (s[i] != t[i]) {
                diff.add(i);
            }
        }
        int q = sc.nextInt();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < q; i++) {
            char type = sc.next().charAt(0);
            int c = sc.nextInt() - 1;
            char x = sc.next().charAt(0);
            if (type == 'T') {
                t[c] = x;
            } else {
                s[c] = x;
            }
            if (t[c] == s[c]) {
                diff.remove(c);
            } else {
                diff.add(c);
            }
            if (diff.size() == 0) {
                sb.append("=");
            } else if (s[diff.first()] < t[diff.first()]) {
                sb.append("<");
            } else {
                sb.append(">");
            }
            sb.append("\n");
        }
        System.out.print(sb);
    }
}