#include <bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin >> N;
  string S;
  cin >> S;
  string T;
  cin >> T;
  set<int> st;
  for (int i= 0; i < N; i++){
    if (S[i] != T[i]){
      st.insert(i);
    }
  }
  int Q;
  cin >> Q;
  for (int i = 0; i < Q; i++){
    char c;
    int x;
    int y;
    cin >> c >> x >> y;
    x--;
    if (st.count(x) == 1){
      st.erase(x);
    }
    if (c == 'S'){
      S[x] = (char) ('0' + y);
    }
    if (c == 'T'){
      T[x] = (char) ('0' + y);
    }
    if (S[x] != T[x]){
      st.insert(x);
    }
    if (st.empty()){
      cout << '=' << endl;
    } else {
      int p = *st.begin();
      if (S[p] > T[p]){
        cout << '>' << endl;
      }
      if (S[p] < T[p]) {
        cout << '<' << endl;
      }
    }
  }
}