using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Text; class TEST{ static void Main(){ Sol mySol =new Sol(); mySol.Solve(); } } class Sol{ public void Solve(){ List Bottom = new List(); List L = new List(); List R = new List(); Bottom.Add(new Q(0,1+0)); L.Add(new Q(1,1+0)); R.Add(new Q(1,1+0)); for(int i=0;i BH = new HashSet(); foreach(var lb in Bottom)BH.Add(lb); //Console.WriteLine(String.Join(" ",Bottom)); long ans = 0; foreach(var le in L){ foreach(var re in R){ var h = le - (1 - re); if(h < 0) continue; var uh = Q.Min(le,re); int l = 0; int r = Bottom.Count; int c = 0; while(r-l>1){ c = (r+l)/2; if(Bottom[c] < uh){ l = c; }else{ r = c; } } //Console.WriteLine("{0}.Contained? {1}",h,BH.Contains(h)); long tria = 0; if(h == 0){ tria = l; if(BH.Contains(uh)) tria++; }else if(h == uh){ tria = l+1; }else{ tria = l+1; if(BH.Contains(h)){ tria--; } if(BH.Contains(uh)) tria++; } //Console.WriteLine("le:{0},re:{1},h:{2},uh,{3},tria;{4}",le,re,h,uh,tria); ans += tria; } } Console.WriteLine(ans); } int N; long[] P,A,B; public Sol(){ N = ri(); P = new long[N]; A = new long[N]; B = new long[N]; for(int i=0;iint.Parse(e));} static long[] rla(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>long.Parse(e));} static double[] rda(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>double.Parse(e));} } struct Q:IComparable { long num; long den; public static long gcd(long a,long b){ return a==0?b:gcd(b%a,a); } public static Q Red(Q x){ long n=x.Num; long d=x.Den; long g=gcd(Math.Abs(n),Math.Abs(d)); n/=g; d/=g; if(d<0){n*=-1;d*=-1;} return new Q(n,d); } public int CompareTo(Q t){ var d = num*t.den-den*t.num; return d > 0 ? 1 : d < 0 ? -1 : 0; } public long Num{ get{return num;} set{this.num=value;} } public long Den{ get{return den;} set{this.den=value;} } public Q(long n_,long d_){ if(d_<0){ n_*=-1;d_*=-1;} long g=gcd(Math.Abs(n_),Math.Abs(d_)); n_/=g; d_/=g; num=n_;den=d_; } public static implicit operator Q(long n){ return new Q(n,1); } public static Q operator+(Q a,Q b){ return (new Q(a.Num*b.Den+a.Den*b.Num,a.Den*b.Den)); } public static Q operator-(Q a,Q b){ return (new Q(a.Num*b.Den-a.Den*b.Num,a.Den*b.Den)); } public static Q operator-(Q a){ return (new Q(-a.Num,a.Den)); } public static Q operator*(Q a,Q b){ return (new Q(a.Num*b.Num,a.Den*b.Den)); } public static Q operator/(Q a,Q b){ return (new Q(a.Num*b.Den,a.Den*b.Num)); } public static bool operator>(Q a,Q b){ return a.CompareTo(b) > 0; } public static bool operator<(Q a,Q b){ return a.CompareTo(b) < 0; } public static bool operator>=(Q a,Q b){ return a.CompareTo(b) >= 0; } public static bool operator<=(Q a,Q b){ return a.CompareTo(b) <= 0; } public static bool operator==(Q a,Q b){ return a.Equals(b); } public static bool operator!=(Q a,Q b){ return !(a==b); } public override bool Equals(System.Object obj){ if(obj == null) return false; Q p = (Q) obj; if((System.Object) p == null ) return false; return den * p.num == num * p.den; } public override int GetHashCode(){ long g = gcd(Math.Abs(den),Math.Abs(num)); long d = den/g; long n = num/g; return (d^n).GetHashCode(); } public static Q Min(Q a,Q b){ return a < b ? a : b; } public override String ToString(){ return this.Num.ToString()+"/"+this.Den.ToString(); } }