#include <iostream>
#include <set>
using namespace std;

int main()
{
    int n;
    cin >> n;
    string s, t;
    cin >> s >> t;
    set<int> st;
    for(int i = 0; i < n; i++){
        if(s[i] != t[i]) st.insert(i);
    }
    int q;
    cin >> q;
    while(q--){
        char c;
        int x, y;
        cin >> c >> x >> y;
        x--;
        if(c == 'S') s[x] = char('0' + y);
        else t[x] = char('0' + y);
        if(s[x] != t[x]) st.insert(x);
        else st.erase(x);
        if(st.empty()) cout << '=' << endl;
        else if(s[*st.begin()] < t[*st.begin()]) cout << '<' << endl;
        else cout << '>' << endl;
    }
}