#pragma GCC optimize("O3")
//#pragma GCC target("avx2")
//#pragma GCC optimize("unroll-loops")

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ld> vld;
typedef pair<ll,ll> Pll;
typedef pair<int,int> Pin;

ll INF = 1e16;
int inf = 1e9;

#define ALL(x) (x).begin(), (x).end()
#define FOR(i, m, n) for (ll i = (m); i < (n); ++i)
#define REVFOR(i, m, n) for (ll i = (n - 1); i >= (m); --i)
#define REP(i, n) FOR(i, 0, n)
#define REVREP(i, n) REVFOR(i, 0, n)
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define bcnt __builtin_popcountll

#ifdef LOCAL
#include <prettyprint.hpp>
#define debug(...)  cerr << "[" << #__VA_ARGS__ << "]: ", d_err(__VA_ARGS__);
#else
#define debug(...) 83;
#endif

void d_err() {
    cerr << endl;
}

template <typename H, typename... T>
void d_err(H h, T... t) {
    cerr << h << " ";
    d_err(t...);
}

template <typename T>
void print(T x) {
    cout << x << "\n";
}

template <typename T>
void print(vector<T>& x) {
    int N = x.size();
    REP(i, N) {
        if (i > 0) cout << " ";
        cout << x[i];
    }
    cout << "\n";
}

int main(){
    cin.tie(0);
    ios_base::sync_with_stdio(false);
    cout << fixed << setprecision(20);

    int n; cin >> n;
    string s, t; cin >> s >> t;
    int q; cin >> q;

    set<int> ss, st;

    REP(i, n) {
        if (s[i] > t[i]) ss.insert(i);
        else if (s[i] < t[i]) st.insert(i);
    }

    while(q--) {
        char c; cin >> c;
        int x; char y; cin >> x >> y;
        x--;

        if (s[x] > t[x]) ss.erase(x);
        else if (s[x] < t[x]) st.erase(x);

        if (c == 'S') {
            s[x] = y;
        } else {
            t[x] = y;
        }

        if (s[x] > t[x]) ss.insert(x);
        else if (s[x] < t[x]) st.insert(x);

        if (ss.empty() && st.empty()) {
            print('=');
        } else {
            if (ss.empty()) {
                print('<');
            } else if (st.empty()) {
                print('>');
            } else {
                if (*ss.begin() < *st.begin()) print('>');
                else print('<');
            }
        }

    }
    
}