結果
| 問題 |
No.461 三角形はいくつ?
|
| コンテスト | |
| ユーザー |
kuuso1
|
| 提出日時 | 2016-12-12 03:00:39 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 4,886 ms / 5,000 ms |
| コード長 | 4,441 bytes |
| コンパイル時間 | 1,118 ms |
| コンパイル使用メモリ | 112,556 KB |
| 実行使用メモリ | 34,624 KB |
| 最終ジャッジ日時 | 2024-11-29 13:44:52 |
| 合計ジャッジ時間 | 50,834 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 41 |
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc) Copyright (C) Microsoft Corporation. All rights reserved.
ソースコード
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<Q> Bottom = new List<Q>();
List<Q> L = new List<Q>();
List<Q> R = new List<Q>();
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<N;i++){
if(P[i] == 0){
Bottom.Add(new Q(B[i],(A[i]+B[i])));
}else if(P[i] == 1){
L.Add(new Q(A[i],B[i]+A[i]));
}else{
R.Add(new Q(A[i],B[i]+A[i]));
}
}
Bottom.Sort();
HashSet<Q> BH = new HashSet<Q>();
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(l+1<Bottom.Count && Bottom[l+1] == uh) tria++;
}else if(h == uh){
tria = l+1;
}else{
tria = l+1;
if(BH.Contains(h)){
tria--;
}
if(l+1<Bottom.Count && Bottom[l+1] == 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;i<N;i++){
var d = rla();
P[i] = d[0];
A[i] = d[1];
B[i] = d[2];
}
}
static String rs(){return Console.ReadLine();}
static int ri(){return int.Parse(Console.ReadLine());}
static long rl(){return long.Parse(Console.ReadLine());}
static double rd(){return double.Parse(Console.ReadLine());}
static String[] rsa(char sep=' '){return Console.ReadLine().Split(sep);}
static int[] ria(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>int.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<Q> {
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();
}
}
kuuso1