#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define rep(i, n) for (int i = 0; i < (n); i++)
#define P pair<int, int>


string s, t;
vector<int> vs, vt;
int n, param;

void out(int comp) {
  string res;
  if (comp == 0) res = ">";
  else if (comp == 1) res = "=";
  else res = "<";
  cout << res << endl;
}

void compare(int x, int& idx) {
  for (int i = x; i < idx; i++) {
    if (vs[i] > vt[i]) {
      param = 0;
      idx = i;
      break;
    } else if (vs[i] < vt[i]) {
      param = 2;
      idx = i;
      break;
    } else {
      if (i < idx-1) continue;
      param = 1;
      idx = i;
    }
  }
  return;
}


int main() {
  cin >> n;
  cin >> s >> t;
  vs.resize(n), vt.resize(n);
  rep(i, n) {
    vs[i] = s[i]-'0';
    vt[i] = t[i]-'0';
  }
  int idx = 0;
  compare(0, idx);

  int q;
  cin >> q;
  rep(i, q) {
    char c;
    int x, y;
    cin >> c >> x >> y;
    x--;
    if (c == 'S') vs[x] = y;
    else vt[x] = y;

    if (x > idx) out(param);
    else if (x < idx) {
      if (vs[x] > vt[x]) {
        param = 0;
        idx = i;
      } else if (vs[x] < vt[x]){
        param = 2;
        idx = i;
      } else {
        out(param);
      }
    } else {
      compare(x, idx);
      out(param);
    }
  }


}