using System; using System.Collections.Generic; using System.Collections; using System.Collections.Specialized; using System.Linq; using System.Text; using System.IO; using System.Reflection; using static System.Math; using System.Numerics; static class Program{ const int mod=(int)1e9+7; static List[] li; static bool[] b; static void Main(){ Sc sc=new Sc(); var s=sc.Ia; int n=s[0],m=n-1; li=new List[n+1]; b=new bool[n+1]; for(int i=1;i<=n;i++){li[i]=new List();} for(int i=0;i[] li; public int[] at,ixl,ixr,fa,oa,ixl2,ixr2; public Et(List[] li,int o){ int n=li.Length; this.li=li; at=new int[n]; ixl=new int[n]; ixr=new int[n]; fa=new int[n]; oa=new int[n]; ixl2=new int[n]; ixr2=new int[n]; var qu=new Queue(); qu.Enqueue(o); fa[o]=1; at[1]=o; int f=2; while(qu.Count>0){ var e=qu.Dequeue(); ixl[e]=f; for(int i = 0;i1;i--) { ixl2[oa[i]]=Min(ixl2[oa[i]],ixl[i]); ixr2[oa[i]]=Max(ixr2[oa[i]],ixr[i]); } } } public class St{ public long[] dat,dat3; private bool[] bo3; private int m=1,cnt=0; public St(int n){ while(m=cnt){return 0;} if(bo3[k]){ dat[k]=dat3[k]; if(2*k+1>1;bo3[2*k+1]=true;} if(2*k+2>1;bo3[2*k+2]=true;} bo3[k]=false; } if(r>1)+Fdg(a,b,k*2+2,(l+r+1)>>1,r);} } public long Get(int a,int b){return Fdg(a,b,0,0,m-1);} public void Ud3(int a,int b,long d){Hn3(a,b,0,0,m-1,d*m);} private long Hn3(int a,int b,int k,int l,int r,long d){ if(k>=cnt){return 0;} if(a<=l&&r<=b){dat3[k]=d;bo3[k]=true;return d;} if(bo3[k]){ dat[k]=dat3[k]; if(2*k+1>1;bo3[2*k+1]=true;} if(2*k+2>1;bo3[2*k+2]=true;} bo3[k]=false; } if(r>=a&&b>=l){ dat[k]=Hn3(a,b,k*2+1,l,(l+r)>>1,d>>1)+Hn3(a,b,k*2+2,(l+r+1)>>1,r,d>>1); return dat[k]; } return dat[k]; } } public class Sc{ public int I{get{return int.Parse(Console.ReadLine());}} public long L{get{return long.Parse(Console.ReadLine());}} public double D{get{return double.Parse(Console.ReadLine());}} public string S{get{return Console.ReadLine();}} public int[] Ia{get{return Array.ConvertAll(Console.ReadLine().Split(),int.Parse);}} public long[] La{get{return Array.ConvertAll(Console.ReadLine().Split(),long.Parse);}} public double[] Da{get{return Array.ConvertAll(Console.ReadLine().Split(),double.Parse);}} public string[] Sa{get{return Console.ReadLine().Split();}} public object[] Oa{get{return Console.ReadLine().Split();}} public int[] Ia2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),int.Parse);}} public int[] Ia3(int a){return Array.ConvertAll((a.ToString()+" "+Console.ReadLine()).Split(),int.Parse);} public int[] Ia3(bool a,int b,bool c,int d){return Array.ConvertAll(((a?b.ToString()+" ":"")+Console.ReadLine()+(c?" "+d.ToString():"")).Split(),int.Parse);} public long[] La2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),long.Parse);}} public long[] La3(int a){return Array.ConvertAll((a.ToString()+" "+Console.ReadLine()).Split(),long.Parse);} public long[] La3(bool a,int b,bool c,int d){return Array.ConvertAll(((a?b.ToString()+" ":"")+Console.ReadLine()+(c?" "+d.ToString():"")).Split(),long.Parse);} public double[] Da2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),double.Parse);}} public double[] Da3(int a){return Array.ConvertAll((a.ToString()+" "+Console.ReadLine()).Split(),double.Parse);} public double[] Da3(bool a,int b,bool c,int d){return Array.ConvertAll(((a?b.ToString()+" ":"")+Console.ReadLine()+(c?" "+d.ToString():"")).Split(),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