#include <bits/stdc++.h>
using namespace std;
int h,w;
void askline(int r){
cout<<"? ";
for(int i = 1; i < r; i++)cout<<"v";
for(int j = 1; j < w; j++)cout<<">";
cout<<endl;
int i,j; cin>>i>>j; i++; j++;
cout<<"! "<<i-1<<" "<<j+1 -1<<endl;
}
void askcolumn(int c){
cout<<"? ";
for(int j = 1; j < c; j++)cout<<">";
for(int i = 1; i < h; i++)cout<<"v";
cout<<endl;
int i,j; cin>>i>>j; i++; j++;
cout<<"! "<<i+1 -1<<" "<<j -1<<endl;
}
int main(){
cin>>h>>w;
if(h == 1){ askline(1); return 0;}
if(w == 1){ askcolumn(1); return 0;}
int mid = (h+1)/2;
cout<<"? ";
for(int j = 1; j <= w; j++){
if(j != 1) for(int i = mid; i > 1; i--)cout<<"^";
for(int i = 1; i < mid; i++)cout<<"v";
if(j != w)cout<<">";
}cout<<endl;
int r,c; cin>>r>>c; r++; c++;
if(r != mid){ askline(r-mid); return 0; }
if(c != w){ cout<<"! "<<mid -1<<" "<<c+1 -1<<endl; return 0; }
if(h%2 == 1)mid--;
cout<<"? ";
for(int j = 1; j < w; j++)cout<<">";
for(int i = 1; i < mid+1; i++)cout<<"v";
for(int j = w; j >= 1; j--){
for(int i = mid+1; i < h; i++)cout<<"v";
for(int i = h; i > mid+1; i--)cout<<"^";
if(j != 1)cout<<"<";
}cout<<endl;
cin>>r>>c; r++; c++;
if(r != mid+1){ askline(h-(mid-r)); return 0; }
if(c != 1){ cout<<"! "<<mid+1 -1<<" "<<c-1 -1<<endl; return 0; }
askcolumn(1);
}
