#include <stdio.h>
#include <stdlib.h>

int n, k, minsteps, x;

int GetForTwo(int i, int j)
{
    int t = 1, t2 = j - i;

    while (t < t2)
        {
            t2 -= t;
            t++;
        }

    return t;
}

int GetSteps(int i, int j, int e)
{
    int t;

    if ((e == 1) || (i == j))
    {
        x = i;
        return j - i;
    }

    if (e == 2)
    {
        t = GetForTwo(i, j);
        x = i + t - 1;
        return t;
    }

    x = (i + j) / 2;
    return 1000;
}

int main()
{
    char c[10] = "";
    int i, j, t;

    scanf("%d%d", &n, &k);
    i = 1;
    j = n;
    gets(c);

    while (c[0] != 'e')
    {
        if (c[0] == 's')
            i = x + 1;
        if (c[0] == 'b')
        {
            j = x;
            k--;
        }

        minsteps = 1000;
        t = GetSteps(i, j, k);

        if (t == 0)
            printf("answer %d\n", x);
        else
            printf("query %d\n", x);
        fflush(stdout);
        gets(c);
    }


    return 0;
}