#include <cstdio>
#include <cstdlib>
#include <cstddef>
#include <vector>
#include <algorithm>
#include <cmath>
#include <string>
#include <iostream>
#include <iomanip>
#define L64 long long
#define MOD (1000000007LL)

int main(void)
{
  int n, k;
  std::cin >> n >> k;
  int stt = (n - 1) % (k + 1);
  int ret = 0;
  while(true){
    std::cout << stt << std::endl << std::flush;
    std::cin >> ret;
    if(n <= ret){
      break;
    }
    stt += (k + 1);
  }
}