#include "bits/stdc++.h"
using namespace std ;
void sol( ){
int lo = 1, hi = 1000000, ans = -1 ;
char op ;
while( lo <= hi ){
int mid = lo + hi >> 1 ;
cout << 1 << " " << mid << endl ;
cin >> op ;
if( op == -1 ){
return ;
}
if( op == '<' ){
ans = mid ;
lo = mid+1 ;
}
else{
hi = mid-1 ;
}
}
cout << 0 << " " << ans << endl ;
}
signed main( ){
sol( ) ;
}
}
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