#include <iostream>
#include <vector>
#include <atcoder/segtree>

using namespace std;
using namespace atcoder;

int op(int a,int b) {return abs(a)+abs(b);}
int e() {return 0;}
int chk(int x){ return x==0;}
int main(){
    int n;
    cin>>n;
    vector<int> s,t,diff;
    string ss,st;
    cin>>ss>>st;
    for(auto c:ss) s.push_back(c-'0');
    for(auto c:st) t.push_back(c-'0');
    for(int i=0;i<n;i++) diff.push_back(s[i]-t[i]);
    
    segtree<int,op,e> seg(diff);
    int q;
    cin>>q;
    for(int i=0;i<q;i++){
        char c;
        int x,y;
        cin>>c>>x>>y;
        if(c=='S'){
            s[x-1]=y;
        }else{
            t[x-1]=y;
        }
        seg.set(x-1,s[x-1]-t[x-1]);
        int p=seg.max_right(0,chk);
        if(p==n) cout<<"="<<endl;
        else cout<<((seg.get(p)>0)?">":"<")<<endl;
    }

    return 0;
}