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

inline void query(int& st, int x, int y, int N)
{
    int de=pow(10,N-x);
    st -= (st/de)%10 * de;
    st += y*de;
}

int main()
{
    int N,S,T,Q;
    cin >> N >> S >> T >> Q;
    char c;
    int x,y;
    for(int i=0; i<Q; i++)
    {
        cin >> c >> x >> y;
        if(c == 'S')
        {
            query(S,x,y,N);
        }else{
            query(T,x,y,N);
        }
        if(S > T) cout << '>' << endl;
        else if(T == S) cout << '=' << endl;
        else cout << '<' << endl;
    }
    
    return 0;
}