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 Sc sc=new Sc(); static void Main(){ Pt pt=new Pt(Solve); pt.Sm(); } static void Solve(Pt pt) { var (h,w,n,p)=sc.Tp4(); var a = new int[n][]; for(int i = 0;i x[0]).ThenBy(x => x[1]).ToArray(); St st = new St(w+1,true,false,0); for(int i = 0;i0) { if((e&1)>0) { r*=x; r%=mod; } x=x*x%mod; e>>=1; } return r; } } public struct Mint { const int mod = 998244353; private long d; public Mint(long d) { this.d=d; } public static implicit operator Mint(long d) { return new Mint(d%mod); } public static explicit operator long(Mint d) { return d.d; } public override string ToString() { return d.ToString(); } public static Mint operator +(Mint a,long b) { a.d=(mod+a.d+b%mod)%mod; return a; } public static Mint operator +(Mint a,Mint b) { a.d=(a.d+b.d)%mod; return a; } public static Mint operator -(Mint a,long b) { a.d=(mod+a.d-b%mod)%mod; return a; } public static Mint operator -(Mint a,Mint b) { a.d=(mod+a.d-b.d)%mod; return a; } public static Mint operator *(Mint a,long b) { a.d=b%mod*a.d%mod; return a; } public static Mint operator *(Mint a,Mint b) { a.d=a.d*b.d%mod; return a; } public static Mint operator /(Mint a,long b) { a.d=a.d*Mi(b)%mod; return a; } public static Mint operator /(Mint a,Mint b) { a.d=a.d*Mi(b.d)%mod; return a; } public static bool operator ==(Mint a,long b) { return (long)a==b; } public static bool operator !=(Mint a,long b) { return (long)a!=b; } public override bool Equals(object obj) { return false; } public override int GetHashCode() { return 0; } public static long Mi(long a) { a=(a+mod)%mod; long b = mod, u = 1, v = 0; while(b>0) { long t = a/b; a-=t*b; (a, b)=(b, a); u-=t*v; (u, v)=(v, u); } u%=mod; if(u<0) { u+=mod; } return u%mod; } } public class St { public class Dt { public int n; public long d; public Dt(long d,int n) { this.d=d; this.n=n; } public override string ToString() => "n:"+n.ToString()+" d:"+d.ToString(); } private Dt[] dat; private int n, cnt; private bool ku; private Dt du; private Func compare; public St(int n,bool mm,bool ku,long df) { this.n=n; this.ku=ku; if(mm) { du=new Dt(long.MinValue,-1); compare=CoMax; } else { du=new Dt(long.MaxValue,-1); compare=CoMin; } cnt=n<<1; dat=new Dt[cnt]; for(int i = cnt-1;i>=cnt-n;i--) { dat[i]=new Dt(df,n-cnt+i); } for(int i = cnt-n-1;i>0;i--) { dat[i]=dat[i<<1]; } } private Dt CoMax(Dt x,Dt y) { return x.d>y.d ? x : y; } private Dt CoMin(Dt x,Dt y) { return x.d1) { dat[q>>=1]=compare(dat[q<<1],dat[(q<<1)+1]); } } public Dt Get(int l,int r) { Dt x = du; l+=n; r+=n; while(l<=r) { if((l&1)==1) { x=compare(x,dat[l]); l++; } if((r&1)==0) { x=compare(x,dat[r]); r--; } l>>=1; r>>=1; } return x; } public (int r, long d) Bsl(int l,long b) { Dt x = du, bd = new Dt(b,-1); int r = cnt-1; l+=n; var sk = new Stack(); while(l<=r) { if((l&1)==1) { if(compare(bd,compare(x,dat[l]))!=bd) { goto lb; } x=compare(x,dat[l]); l++; } if((r&1)==0) { sk.Push(r); r--; } l>>=1; r>>=1; } while(sk.Count>0) { l=sk.Pop(); if(compare(bd,compare(x,dat[l]))!=bd) { goto lb; } x=compare(x,dat[l]); } return (-1, x.d); lb: while(l<<1 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).AppendLine();} public void Wl(long s){sb.Append(s).AppendLine();} public void Wl(double s){sb.Append(s).AppendLine();} public void Wl(decimal s){sb.Append(s).AppendLine();} public void Wl(char s){sb.Append(s).AppendLine();} public void Wl(string s){sb.AppendLine(s);} public void Wl(object s){sb.Append(s).AppendLine();} public void Wl(int[] s){sb.AppendLine(string.Join(" ",s));} public void Wl(long[] s){sb.AppendLine(string.Join(" ",s));} public void Wl(double[] s){sb.AppendLine(string.Join(" ",s));} public void Wl(string[] s){sb.AppendLine(string.Join(" ",s));} public void Wl(params object[] s){sb.AppendLine(string.Join(" ",s));} public void Wl(){sb.AppendLine();} 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; private string path; public Scs(string path){sr=new StreamReader(this.path=path);} [MethodImpl(MethodImplOptions.AggressiveInlining)] protected override string Rl(){return sr.ReadLine();} public void Close(){sr.Close();} public void Reset(){sr=new StreamReader(path);} } 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(params 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));} }