#include <bits/stdc++.h>
using namespace std;

using ll = long long int;
using ull = unsigned long long int;
using P = pair<int, int>;
using P3 = pair<int,P>;
using PP = pair<P, P>;
constexpr int INF32 = 1 << 30;
constexpr ll INF64 = 1LL << 62;
// constexpr ll MOD = 1000000007;
constexpr ll MOD = 998244353;
constexpr int di[] = {0, 1, 0, -1};
constexpr int dj[] = {1, 0, -1, 0};
constexpr int di8[] = {0, 1, 1, 1, 0, -1, -1, -1};
constexpr int dj8[] = {1, 1, 0, -1, -1, -1, 0, 1};
constexpr double EPS = 1e-10;
const double PI = acos(-1);

#define ALL(v) (v).begin(),(v).end()
#define REP(i,n) for(int i=0,i_len=n; i<i_len; ++i)

template<typename T1,typename T2> bool chmax(T1 &a, T2 b) { if (a<b) { a=b; return 1; } return 0; }
template<typename T1,typename T2> bool chmin(T1 &a, T2 b) { if (b<a) { a=b; return 1; } return 0; }

int solve(){
    int n, q;
    string s, t;
    cin >> n >> s >> t >> q;
    set<int> pos;
    REP(i,n){
        if(s[i]!=t[i]) pos.insert(i);
    }
    REP(i,q){
        char c;
        int x, y;
        cin >> c >> x >> y;
        x--;
        if(c=='S') s[x] = '0'+y;
        else t[x] = '0'+y;
        if(s[x]!=t[x]) pos.insert(x);
        else pos.erase(x);
        if(pos.empty()){
            cout << "=" << endl;
        }else{
            int k = *pos.begin();
            cout << (s[k]>t[k] ? ">":"<") << endl;
        }
    }
    return 0;
}

int main(){
    cin.tie(0); ios::sync_with_stdio(0); cout<<fixed<<setprecision(20);
    // int t; cin >> t; for(int i=0;i<t;i++) solve();
    // while(!solve());
    solve();
    return 0;
}