#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001


int main(){
	
	int N;
	cin>>N;
	
	string S,T;
	cin>>S>>T;
	
	set<int> ne;
	rep(i,N){
		if(S[i]!=T[i])ne.insert(i);
	}
	
	int Q;
	cin>>Q;
	
	rep(_,Q){
		char c;
		int x,y;
		cin>>c>>x>>y;
		x--;
		
		if(S[x]!=T[x])ne.erase(x);
		if(c=='S')S[x] = '0'+y;
		if(c=='T')T[x] = '0'+y;
		if(S[x]!=T[x])ne.insert(x);
		
		if(ne.size()==0)printf("=\n");
		else{
			int ind = *ne.begin();
			if(S[ind]<T[ind])printf("<\n");
			else printf(">\n");
		}
		
	}
	

    return 0;
}