#include <bits/stdc++.h>
// #include <atcoder/all> // NOTE: AtCoderライブラリ
using namespace std;
// using namespace atcoder; // NOTE: AtCoderライブラリ
#define fi first
#define se second
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rrep(i, n) for (int i = (int)(n) - 1; i >= 0; i--)
#define dbg(x) cerr << #x << ": " << x << endl;
#define dbg2(x, y) cerr << #x << ": " << x << ", " << #y << ": " << y << endl;
#define dbg3(x, y, z) cerr << #x << ": " << x << ", " << #y << ": " << y << ", " << #z << ": " << z << endl;
#define nl() cout << "========================================" << endl;
#define yn { puts("Yes"); } else{ puts("No"); } // 使い方: if (条件) yn; 
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef vector<int> vi;
typedef vector<long long> vl;
typedef vector<bool> vb;
typedef vector<char> vc;
typedef vector<string> vs;
typedef vector<vector<int>> vvi;
typedef vector<vector<long long>> vvl;
typedef vector<vector<bool>> vvb;
typedef vector<vector<char>> vvc;
typedef vector<pair<int, int>> vpii;
typedef vector<pair<long long, long long>> vpll;
const long long LINF = 1001002003004005006ll;
const int INF = 1001001001;
template<typename T> void chmin(T &a, T b) { if (a > b) a = b; }
template<typename T> void chmax(T &a, T b) { if (a < b) a = b; }

int main() {
    int N; cin >> N;
    string S, T; cin >> S >> T;

    set<int> diff;
    rep(i, N) {
        if (S[i] != T[i]) diff.insert(i);
    }

    int Q; cin >> Q;
    rep(i, Q) {
        string C; cin >> C; int X; cin >> X; char Y; cin >> Y;
        X--;

        if (C == "S") S[X] = Y;
        else T[X] = Y;

        if (S[X] == T[X]) {
            if (diff.count(X) != 0) diff.erase(X);
        } else {
            if (diff.count(X) == 0) diff.insert(X);
        }

        if (diff.size() == 0) {
            cout << "=" << endl;
        } else {
            int i = *diff.begin();
            if (S[i] > T[i]) {
                cout << ">" << endl;
            } else {
                cout << "<" << endl;
            }
        }
    }
}