#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
#include <time.h> 
using namespace atcoder;
using ll = long long;
using vll = vector<ll>;
using vvll = vector<vll>;
using vvvll = vector<vvll>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vvvb = vector<vvb>;
#define all(A) A.begin(),A.end()
#define rep(i, n) for (ll i = 0; i < (ll) (n); i++)


int main() {

    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    ll N,Q;
    string S,T;
    cin>>N>>S>>T>>Q;
    set<ll> P;
    rep(i,N)if(S[i]!=T[i])P.insert(i);
    rep(q,Q){
        char C,Y;
        ll X;
        cin>>C>>X>>Y;
        X--;
        if(P.count(X))P.erase(X);
        (C=='S'?S:T)[X]=Y;
        if(S[X]!=T[X])P.insert(X);
        if(P.size()==0)cout<<"="<<endl;
        else{
            auto p=*(P.begin());
            cout<<(S[p]<T[p]?"<":">")<<endl;
        }
    }
}