import java.util.Scanner;
import java.util.TreeSet;

public class P5533 {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int n = in.nextInt();
		char[] s = in.next().toCharArray();
		char[] t = in.next().toCharArray();

		TreeSet<Integer> sg = new TreeSet<>();
		TreeSet<Integer> tg = new TreeSet<>();
		for(int i = 0;i < n;i++){
			if(s[i] > t[i]){
				sg.add(i);
			}else if(s[i] < t[i]){
				tg.add(i);
			}
		}
		for(int Q = in.nextInt();Q > 0;Q--){
			char c = in.next().charAt(0);
			int k = in.nextInt()-1;
			int v = in.nextInt();
			if(c == 'S'){
				s[k] = (char)('0'+v);
			}else{
				t[k] = (char)('0'+v);
			}
			sg.remove(k);
			tg.remove(k);
			if(s[k] > t[k]){
				sg.add(k);
			}else if(s[k] < t[k]){
				tg.add(k);
			}

			int mins = sg.isEmpty() ? n + 1 : sg.first();
			int mint = tg.isEmpty() ? n + 1 : tg.first();
			if(mins == mint){
				System.out.println("=");
			}else if(mins < mint) {
				System.out.println(">");
			}else{
				System.out.println("<");
			}
		}
	}
}