#include <stdio.h>

int q(int val)
{
    printf("%d\n", val);
    fflush(0);
    
    int ret;
    scanf("%d", &ret);
    
    return ret;
}

int main()
{
    int n, k;
    scanf("%d %d", &n, &k);
    
    int put = (n - 1) % (k + 1);
    int prev = put;
    int get = q(put);
    
    while(get < n)
    {
        put = get - prev;
        put = (k + 1) - put;
        prev = get;
        get = q(put);
    }
    
    return 0;
}