#include "avoid.h"
using namespace std;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
pair<int,int>solve1(int x) {
  int po=x, ko=1001;
  while(po<ko) {
    int sr=(po+ko)/2;
    vector<int>P;
    for(int i=po; i<=sr; ++i) P.pb(i);
    send(P);
    vector<int>T=wait();
    if(T[0]) ko=sr; else po=sr+1;
  }
  return {po, po};
}
pair<int,int>solve2() {
  int a=solve1(1).st;
  int b=solve1(a+1).st;
  if(b==1001) b=a;
  return {a, b};
}
pair<int,int>solve3() {
  rep(i, 10) {
    vector<int>A, B;
    for(int j=1; j<=1000; ++j) if(j&(1<<i)) B.pb(j); else A.pb(j);
    send(A);
    send(B);
  }
  int x=0;
  vector<int>T=wait(), P;
  rep(i, 10) if(T[2*i] && T[2*i+1]) P.pb(i); else if(T[2*i+1]) x+=1<<i;
  if(P.size()==0) return {x, x};
  int a=x+(1<<P[0]), b=x;
  if(P.size()==1) return {a, b};
  rep(i, P.size()-1) {
    vector<int>A;
    for(int j=1; j<=1000; ++j) {
      if((j&(1<<P[i])) && (j&(1<<P[i-1]))) A.pb(j);
      if(!(j&(1<<P[i])) && !(j&(1<<P[i-1]))) A.pb(j);
    }
    send(A);
  }
  T=wait();
  rep(i, T.size()) {
    if(T[i]) {
      if(a&(1<<P[i])) a+=1<<P[i+1]; else b+=1<<P[i+1];
    } else {
      if(a&(1<<P[i])) b+=1<<P[i+1]; else a+=1<<P[i+1];
    }
  }
  return {a, b};
}
pair<int,int>scout(int r, int h) {
  if(r==10) return solve1(1);
  if(r==20) return solve2();
  if(r==30) return solve3();
  return {0, 0};
}