#include <bits/stdc++.h>

using namespace std;

int h, w, x, y;

int main() {
    cin >> h >> w;
    string s;
    for(int i=1; i<=200; i++) {
        s.append("<^");
    }
    cout << "? " << s << endl;
    cin >> x >> y;
    if(x != 0 || y != 0) {
        cout << "! " << 0 << " " << 0;
        return 0;
    }
    for(int i=0; i<w-1; i++) {
        s = "";
        for(int j=0; j<h-1; j++) {
            s.append(i%2 ? "^" : "v");
        }
        s.append("<");
        cout << "? " << s << endl;
        cin >> x >> y;
        if(i%2 == 0 && x != h-1) {
            cout << "! " << x+1 << " " << y;
            return 0;
        }
        if(i%2 == 1 && x != 0) {
            cout << "! " << x-1 << " " << y;
            return 0;
        }
        if(y != i+1) {
            cout << "! " << x << " " << y+1;
            return 0;
        }
    }
    return 0;
}