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

int main()
{
    int n, k, i = 1, x = 0;
    char s[10];

    scanf("%d%d", &n, &k);
    k -= 1;
    gets(s);

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

        if (i == n)
        {
            printf("answer %d\n", i);
            fflush(stdout);
        }
        else
        {
            if (k == 1)
                x = i + k - 1;
            else
            {
                if (((n-i+1)/k < (n-i+1)/(2*(k-1))))
                {
                    x = i + k - 1;
                }
                else
                {
                    x = (i + n - 1) / 2;
                }
            }
            printf("query %d\n", x);
            fflush(stdout);
        }
        gets(s);
    }
    return 0;
}