//https://ncode.syosetu.com/n4830bu/257/
#include <bits/stdc++.h>
using namespace std;

int main() {
    int N, K;
    cin >> N >> K;
    if ((N - 1) % (K + 1) == 0) {
        //後攻
        cout << 0 << endl;
        int x;
        while (cin >> x) {
            if (x >= N)
                return 0;
            cout << (x + K) / (K + 1) * (K + 1) << endl;
        }
    } else {
        //先攻
        for (int i = 0;; i++) {
            cout << i * (K + 1) + (N - 1) % (K + 1) << endl;
            int x;
            cin >> x;
            if (x >= N)
                return 0;
        }
    }
}