#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i=0; i<n; i++)
#define pb push_back

int main() {
    cin.tie(0); ios::sync_with_stdio(false);
    int N; cin >> N;
    string S, T; cin >> S >> T;
    set<int> s;
    rep(i, N) if (S[i]!=T[i]) s.insert(i);
    
    int Q; cin >> Q;
    while (Q--) {
        char c;
        int x;
        char y;
        cin >> c >> x >> y;
        x--;
        
        if (c=='S') S[x] = y;
        else T[x] = y;
        
        if (s.find(x)!=s.end() && S[x]==T[x]) s.erase(x);
        if (s.find(x)==s.end() && S[x]!=T[x]) s.insert(x);
        
        if (s.size()==0) cout << '=' << endl;
        else if (S[*s.begin()]>T[*s.begin()]) cout << '>' << endl;
        else cout << '<' << endl;
    }
}