using System; using System.Collections.Generic; using System.Collections; using System.Collections.Specialized; using System.Linq; using System.Text; using System.Text.RegularExpressions; using System.IO; using System.Reflection; using static System.Math; using System.Numerics; using System.Threading; using System.Runtime.CompilerServices; using System.Diagnostics; static class Program{ const long inf=long.MaxValue>>1; const int mod=998244353; static (int y,int x)[] h; static (int y,int x)[] g; static Sc sc=new Sc(); static void Main(){ Pt pt=new Pt(Solve); pt.Sm(); } static void Solve(Pt pt) { DateTime st=DateTime.Now; var (n,m)=sc.Tp2(); h=new (int,int)[n]; g=new (int,int)[m]; var wf=new long[n][]; var wfi=new int[n][]; g[0]=(300,300); g[1]=(300,500); g[2]=(300,700); g[3]=(500,300); g[4]=(500,700); g[5]=(700,300); g[6]=(700,500); g[7]=(700,700); for(int i=0;i(); for(int j = i - 1;j >= 0;j--) {wf[i][j]=wf[j][i]=Dis(h[i],h[j])*25;} } for(int i=0;iwf[j][i]+wf[i][k]) { wf[j][k]=wf[j][i]+wf[i][k]; wfi[j][k]=i; } } } } var tn=n; var t=Enumerable.Range(0,tn).ToArray(); var r=new int[tn]; int v1=0,v2=2; double l1=Fu(t[v1],t[v1+1]),l2,l3,l4; int k1=-1,k2=-1; while((DateTime.Now-st).TotalMilliseconds<600){ if(v1==k1&&v2==k2){ break; } l2=Fu(t[v2],t[(v2+1)%tn]); l3=Fu(t[v1],t[v2]); l4=Fu(t[(v1+1)%tn],t[(v2+1)%tn]); if(l1+l2>l3+l4){ int q=(v1+1)%tn,mm=v2+tn; if((v1==tn-1)||v1(); var lis=new List<(int,int)>(); for(int i = 0;i < n;i++) { if(t[i]==0) { for(int j = 0;j < n;j++) { Ff(t[(i+j)%n],t[(i+j+1)%n]); void Ff(int a,int b) { if(wfi[a][b]!=-1) { Ff(a,wfi[a][b]); Ff(wfi[a][b],b); } else { lin.Add((1,a)); } } } lin.Add((1,0)); break; } } lis=lin; long sp=Fp(lin); Random ra=new Random(1); const int ty=950,tl=1,tu=3000,o=1000000000; var dd=(DateTime.Now-st).TotalMilliseconds; for(int l=0;dd(); lik.Add(lin[0]); long kp=0; for(int i = 1;i < lin.Count;i++) { var p=Dis(h[lin[i-1].Item2],h[lin[i].Item2])*25; int d1=-1,d2=-1; for(int j = 0;j < m;j++) { var u=Dis(h[lin[i-1].Item2],g[j])*5+Dis(g[j],h[lin[i].Item2])*5; if(p>u) { p=u; d1=j; } } for(int j = 0;j < m;j++) { for(int k = 0;k < m;k++) { if(j==k) {continue;} var u=Dis(h[lin[i-1].Item2],g[j])*5+Dis(g[j],g[k])+Dis(g[k],h[lin[i].Item2])*5; if(p>u) { p=u; d1=j; d2=k; } } } if(d1!=-1) { lik.Add((2,d1)); if(d2!=-1) {lik.Add((2,d2));} } lik.Add(lin[i]); kp+=p; } kp=(long)Round(1e9/(1000+Sqrt(kp))); if(kp>sp) { sp=kp; lis=new List<(int,int)>(lik); } else { g[l%8]=(g[l%8].y-y,g[l%8].x-x); } dd=(DateTime.Now-st).TotalMilliseconds; } for(int i = 0;i < m;i++) { pt.Wl(g[i].y,g[i].x); } pt.Wl(lis.Count); for(int i = 0;i < lis.Count;i++) { pt.Wl(lis[i].Item1,lis[i].Item2+1); } } [MethodImpl(MethodImplOptions.AggressiveInlining)] static long Dis((int,int) a,(int,int) b) {return (a.Item1-b.Item1)*(a.Item1-b.Item1)+(a.Item2-b.Item2)*(a.Item2-b.Item2);} [MethodImpl(MethodImplOptions.AggressiveInlining)] static long Fp(List<(int,int)> li) { long p=0; for(int i = 1;i < li.Count;i++) { p+=Fd(li[i-1],li[i]); } return (long)Round(1e9/(1000+Sqrt(p))); } [MethodImpl(MethodImplOptions.AggressiveInlining)] static long Fd((int,int) a,(int,int) b) { long p=0; if(a.Item1==1&&b.Item1==1) {p=Dis(h[b.Item2],h[a.Item2])*25;} else if(a.Item1==2&&b.Item1==2) {p=Dis(g[b.Item2],g[a.Item2]);} else if(b.Item1==2) {p=Dis(g[b.Item2],h[a.Item2])*5;} else if(a.Item1==2) {p=Dis(h[b.Item2],g[a.Item2])*5;} return p; } } public class Pt{ private StringBuilder sb=new StringBuilder(); public Pt(Action f){f(this);} public void W(int s){sb.Append(s);} public void W(long s){sb.Append(s);} public void W(double s){sb.Append(s);} public void W(decimal s){sb.Append(s);} public void W(char s){sb.Append(s);} public void W(string s){sb.Append(s);} public void W(object s){sb.Append(s);} public void W(params object[] s){sb.Append(string.Join(" ",s));} public void Wl(int s){sb.Append(s).Append(Environment.NewLine);} public void Wl(long s){sb.Append(s).Append(Environment.NewLine);} public void Wl(double s){sb.Append(s).Append(Environment.NewLine);} public void Wl(decimal s){sb.Append(s).Append(Environment.NewLine);} public void Wl(char s){sb.Append(s).Append(Environment.NewLine);} public void Wl(string s){sb.Append(s).Append(Environment.NewLine);} public void Wl(object s){sb.Append(s).Append(Environment.NewLine);} public void Wl(int[] s){sb.Append(string.Join(" ",s)).Append(Environment.NewLine);} public void Wl(long[] s){sb.Append(string.Join(" ",s)).Append(Environment.NewLine);} public void Wl(double[] s){sb.Append(string.Join(" ",s)).Append(Environment.NewLine);} public void Wl(string[] s){sb.Append(string.Join(" ",s)).Append(Environment.NewLine);} public void Wl(params object[] s){sb.Append(string.Join(" ",s)).Append(Environment.NewLine);} public void Wl(){sb.Append(Environment.NewLine);} public void Sm(){Console.Write(sb);} public void Op(StreamWriter sw){ sw.Write(sb); sw.Close(); } public static bool operator==(Pt a,Pt b){return a.sb.ToString()==b.sb.ToString();} public static bool operator!=(Pt a,Pt b){return a.sb.ToString()!=b.sb.ToString();} public override bool Equals(object obj){return false;} public override int GetHashCode(){return 0;} } public class Sc{ [MethodImpl(MethodImplOptions.AggressiveInlining)] protected virtual string Rl(){return Console.ReadLine();} [MethodImpl(MethodImplOptions.AggressiveInlining)] protected virtual string[] Sp(string st){return st.Split();} [MethodImpl(MethodImplOptions.AggressiveInlining)] private T Ct(string s){return (T)Convert.ChangeType(s,typeof(T));} public virtual int I{get{return int.Parse(Rl());}} public virtual long L{get{return long.Parse(Rl());}} public virtual double D{get{return double.Parse(Rl());}} public virtual string S{get{return Rl();}} public int[] Ia{get{return Array.ConvertAll(Sp(Rl()),int.Parse);}} public long[] La{get{return Array.ConvertAll(Sp(Rl()),long.Parse);}} public double[] Da{get{return Array.ConvertAll(Sp(Rl()),double.Parse);}} public string[] Sa{get{return Sp(Rl());}} public object[] Oa{get{return Sp(Rl());}} public int[] Ia2{get{return Array.ConvertAll(Sp("0 "+Rl()+" 0"),int.Parse);}} public int[] Ia3(string a,string b){return Array.ConvertAll(Sp(a+Rl()+b),int.Parse);} public int[] Ia3(int a){return Array.ConvertAll(Sp(Rl()+" "+a.ToString()),int.Parse);} public long[] La2{get{return Array.ConvertAll(Sp("0 "+Rl()+" 0"),long.Parse);}} public long[] La3(string a,string b){return Array.ConvertAll(Sp(a+Rl()+b),long.Parse);} public long[] La3(int a){return Array.ConvertAll(Sp(Rl()+" "+a.ToString()),long.Parse);} public double[] Da2{get{return Array.ConvertAll(Sp("0 "+Rl()+" 0"),double.Parse);}} public double[] Da3(string a,string b){return Array.ConvertAll(Sp(a+Rl()+b),double.Parse);} public T[] Arr(int n,Func f){var a=new T[n];for(int i=0;i(int n,Func f){var a=new T[n];for(int i=0;i(int n,Func f){var a=new T[n];for(int i=0;i(int n,Func f){var a=new T[n];for(int i=0;i(){var s=Sp(Rl());return (Ct(s[0]),Ct(s[1]));} [MethodImpl(MethodImplOptions.AggressiveInlining)] public (T,T,T) Tp3(){var s=Sp(Rl());return (Ct(s[0]),Ct(s[1]),Ct(s[2]));} [MethodImpl(MethodImplOptions.AggressiveInlining)] public (T,T,T,T) Tp4(){var s=Sp(Rl());return (Ct(s[0]),Ct(s[1]),Ct(s[2]),Ct(s[3]));} [MethodImpl(MethodImplOptions.AggressiveInlining)] public (T,T,T,T,T) Tp5(){var s=Sp(Rl());return (Ct(s[0]),Ct(s[1]),Ct(s[2]),Ct(s[3]),Ct(s[4]));} [MethodImpl(MethodImplOptions.AggressiveInlining)] public (T,T,T,T,T,T) Tp6(){var s=Sp(Rl());return (Ct(s[0]),Ct(s[1]),Ct(s[2]),Ct(s[3]),Ct(s[4]),Ct(s[5]));} [MethodImpl(MethodImplOptions.AggressiveInlining)] public (T1,T2) Tp2(){var s=Sp(Rl());return (Ct(s[0]),Ct(s[1]));} [MethodImpl(MethodImplOptions.AggressiveInlining)] public (T1,T1,T2) Tp3(){var s=Sp(Rl());return (Ct(s[0]),Ct(s[1]),Ct(s[2]));} } public class Scr:Sc{ private List li=new List(); private int l=0; private bool bo=false; [MethodImpl(MethodImplOptions.AggressiveInlining)] protected override string Rl(){ if(bo){return li[l++%li.Count];} li.Add(Console.ReadLine()); return li[li.Count-1]; } public void Again(){bo=true;} } public class Scs:Sc{ private StreamReader sr; public Scs(string t){sr=new StreamReader(t);} [MethodImpl(MethodImplOptions.AggressiveInlining)] protected override string Rl(){return sr.ReadLine();} public void Close(){sr.Close();} } public class Sc2:Sc{ private string[] sps=new string[]{" "," ","\t"}; [MethodImpl(MethodImplOptions.AggressiveInlining)] protected override string[] Sp(string st){return st.Split(sps,StringSplitOptions.RemoveEmptyEntries);} public override int I{get{return int.Parse(Sp(Rl())[0]);}} public override long L{get{return long.Parse(Sp(Rl())[0]);}} public override double D{get{return double.Parse(Sp(Rl())[0]);}} public override string S{get{return Sp(Rl())[0];}} } public class Scs2:Sc2{ private StreamReader sr; public Scs2(string t){sr=new StreamReader(t);} [MethodImpl(MethodImplOptions.AggressiveInlining)] protected override string Rl(){return sr.ReadLine();} public void Close(){sr.Close();} } public class Sct:Sc{ private List li=new List(); private int l=0; public void Add(int s){li.Add(s.ToString());} public void Add(long s){li.Add(s.ToString());} public void Add(double s){li.Add(s.ToString());} public void Add(string s){li.Add(s.ToString());} public void Add(object s){li.Add(s.ToString());} public void Add(int[] s){li.Add(string.Join(" ",s));} public void Add(long[] s){li.Add(string.Join(" ",s));} public void Add(double[] s){li.Add(string.Join(" ",s));} public void Add(string[] s){li.Add(string.Join(" ",s));} public void Add(object[] s){li.Add(string.Join(" ",s));} protected override string Rl(){return li[l++];} public void Clear(){li.Clear();l=0;} public void Again(){l=0;} public void Pf(){Console.WriteLine(string.Join("\n",li));} }