#pragma GCC optimize ("O2")
#pragma GCC target ("avx2")
#include<bits/stdc++.h>
//#include<atcoder/all>
//using namespace atcoder;

using namespace std;
typedef long long ll;
#define rep(i, n) for(int i = 0; i < (n); i++)
#define rep1(i, n) for(int i = 1; i <= (n); i++)
#define co(x) cout << (x) << "\n"
#define cosp(x) cout << (x) << " "
#define ce(x) cerr << (x) << "\n"
#define cesp(x) cerr << (x) << " "
#define pb push_back
#define mp make_pair
#define chmin(x, y) x = min(x, y)
#define chmax(x, y) x = max(x, y)
#define Would
#define you
#define please


int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);


	int N;
	cin >> N;
	string S[2];
	cin >> S[0] >> S[1];
	map<int, int> MP;
	rep(i, N) {
		if (S[0][i] < S[1][i]) MP[i] = 1;
		else MP[i] = -1;
	}

	int Q;
	cin >> Q;
	rep(q, Q) {
		char c;
		cin >> c;
		int dotti = (c == 'T');

		int x, y;
		cin >> x >> y;
		x--;
		S[dotti][x] = '0' + y;
		if (S[0][x] < S[1][x]) MP[x] = 1;
		else if (S[0][x] > S[1][x]) MP[x] = -1;
		else {
			MP.erase(x);
		}

		if (MP.size()) {
			if ((*MP.begin()).second > 0) {
				co('<');
			}
			else co('>');
		}
		else co('=');
	}


	Would you please return 0;
}