#include <algorithm>
#include <vector>
#include <cfloat>
#include <string>
#include <cmath>
#include <set>
#include <cstdlib>
#include <map>
#include <ctime>
#include <iomanip>
#include <functional>
#include <deque>
#include <iostream>
#include <cstring>
#include <queue>
#include <cstdio>
#include <stack>
#include <climits>
#include <sys/time.h>
#include <cctype>

using namespace std;

typedef long long ll;


int main() {
  char buf[1000];
  setbuf(stdout, buf);
  ll n, k;
  scanf("%lld %lld", &n, &k);
  if (n-1 <= k) {
    printf("%lld\n", n-1);
    fflush(stdout);
    scanf("%lld", &n);
    return 0;
  }

  ll r = 0;
  if (n%(k+1) == 1) {
    puts("0");
    fflush(stdout);
    scanf("%lld", &r);
  }
  ll p = (n-1)%(k+1);
  while (r < n) {
    if ((r+k-p)/(k+1)*(k+1)+p <= r) {
      printf("%lld\n", r+1);
    }else {
      printf("%lld\n", (r+k-p)/(k+1)*(k+1)+p);
    }
    fflush(stdout);
    scanf("%lld", &r);
  }
}