#include<bits/stdc++.h>
using namespace std;
//#define int long long int
void flush()
{
	cout << '\n';
	//cout.flush();
}
int h,w,r,c;
string str;
int32_t main()
{
	//ios_base::sync_with_stdio(false); cin.tie(0);
	//freopen("input.txt","r",stdin);
	//freopen("output.txt","w",stdout);
	cin >> h >> w;
	for(int i=0;i<h;i++)
	{
		str="";
		for(int j=0;j<i;j++)
			str+='v';
		for(int j=0;j<w;j++)
			str+='>';
		cout << "? " << str; flush();
		cin >> r >> c;
		if(r==i and c<w-1)
		{
			cout << "! " << r << ' ' << c+1; flush();
			break;
		}
		if(r==i-1)
		{
			cout << "! " << i << ' ' << 0; flush();
			break;
		}
	}
}