#include <iostream>
using namespace std;
int rasp;
void bin(int i, int j)
{
	char a[101];
	a[0]=0;
	if(i>j)
		return;
	int mid=(i+j)/2;
	cout<<"query "<<mid<<"\n";
	cout.flush();
	while(a[0]!='s' && a[0]!='b')
	{
		cin.getline(a, 100);
	}
	if(a[0]=='b')
	{
		bin(i, mid-1);
	}
	else if(a[0]=='s')
	{
		rasp=mid;
		bin(mid+1, j);
	}
}
int main()
{
	int a, b;
	cin>>a>>b;
	bin(1, a);
	cout<<"answer "<<rasp;
}