#include <bits/stdc++.h>
#include "richest.h"
using namespace std;
int solve0(){
    vector<int> aska,askb,resp;
    int cnt=0;
    for(int i=0;i<1000;++i) for(int j=i+1;j<1000;++j){
        aska.push_back(i),askb.push_back(j),++cnt;
    }
    resp=ask(aska,askb);
    vector<int> to[1000],in(1000),out(1000),ans;
    for(int i=0;i<cnt;++i){
        if(resp[i]==aska[i]) to[askb[i]].push_back(aska[i]),in[aska[i]]++,out[askb[i]]++;
        else to[aska[i]].push_back(askb[i]),in[askb[i]]++,out[aska[i]]++;
    }
    for(int i=0;i<1000;++i) if(out[i]==0) return i;
    return -1;
}
int solve1(){
    int n=1000000,h=n;
    vector<int> asks(h);
    for(int i=0;i<h;++i) asks[i]=i;
    while(h!=1){
        if(h>=300){
            int x2=-1,cnt=0;
            if(h%2==1) x2=asks[h-1];
            vector<int> aska,askb,resp;
            for(int i=0;i<h/2;++i)
                aska.push_back(asks[i*2]),askb.push_back(asks[i*2+1]),++cnt;
            resp=ask(aska,askb);
            asks.clear();
            if(x2!=-1) asks.push_back(x2);
            for(int i=0;i<cnt;++i){
                if(resp[i]==aska[i]) asks.push_back(aska[i]);
                else asks.push_back(askb[i]);
            }
            h=asks.size();
        }else{
            vector<int> aska,askb,resp;
            int cnt=0;
            for(int i=0;i<h;++i) for(int j=i+1;j<h;++j){
                aska.push_back(asks[i]),askb.push_back(asks[j]),++cnt;
            }
            // alex;
            resp=ask(aska,askb);
            map<int,int> out;
            for(int i=0;i<cnt;++i){
                if(resp[i]==aska[i]) out[askb[i]]++;
                else out[aska[i]]++;
            }
            int ans=-1;
            for(int i=0;i<h;++i) if(out[asks[i]]==0) ans=asks[i];
            return ans;
        }
    }
    return asks[0];
}
int richest(int n,int t,int s){
    if(n==1000) return solve0();
    else return solve1();
}