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();
        int compare = 0;
        int col = 0;
        for (int i = 0; i < n; i++) {
            if (s[i] == t[i]) {
                continue;
            }
            compare = s[i] - t[i];
            col = i;
            break;
        }
        if (compare == 0) {
            col = n;
        }
        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 (col >= c) {
                for (int j = c; j < n; j++) {
                    if (s[j] == t[j]) {
                        continue;
                    }
                    compare = s[j] - t[j];
                    col = j;
                    break;
                }
            }
            if (compare == 0) {
                col = n;
            }
            if (compare == 0) {
                sb.append("=");
            } else if (compare < 0) {
                sb.append("<");
            } else {
                sb.append(">");
            }
            sb.append("\n");
        }
        System.out.print(sb);
    }
}