結果
| 問題 | 
                            No.202 1円玉投げ
                             | 
                    
| コンテスト | |
| ユーザー | 
                             hirokazu1020
                         | 
                    
| 提出日時 | 2015-05-15 05:33:49 | 
| 言語 | C++11(廃止可能性あり)  (gcc 13.3.0)  | 
                    
| 結果 | 
                             
                                WA
                                 
                             
                            
                         | 
                    
| 実行時間 | - | 
| コード長 | 3,506 bytes | 
| コンパイル時間 | 972 ms | 
| コンパイル使用メモリ | 82,280 KB | 
| 実行使用メモリ | 37,920 KB | 
| 最終ジャッジ日時 | 2024-12-22 09:07:40 | 
| 合計ジャッジ時間 | 5,520 ms | 
| 
                            ジャッジサーバーID (参考情報)  | 
                        judge2 / judge5 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 3 | 
| other | AC * 18 WA * 20 | 
ソースコード
#include<sstream>
#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<string>
#include<vector>
#include<set>
#include<map>
#include<queue>
#include<numeric>
#include<functional>
#include<algorithm>
using namespace std;
#define INF (1<<29)
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(v) v.begin(),v.end()
#define uniq(v) v.erase(unique(all(v)),v.end())
#define indexOf(v,x) (find(all(v),x)-v.begin())
int highest_pop(unsigned int b){
#ifdef __GNUC__
	return 31-__builtin_clz(b);
#else 
	int res=0;
	for(int i=4;i>=0;i--){
		int shift=1<<i;
		if(b>>shift){
			b>>=shift;
			res|=shift;
		}
	}
	return res;
#endif
}
template<int U=30> 
class Set{
	unsigned int summary;
	Set<U-5> *ch[1<<5];
	static int low_bits(unsigned int a){
		return a&((1<<U-5)-1);
	}
	static int high_bits(unsigned int a){
		return a>>(U-5);
	}
	static int index(unsigned int high,unsigned int low){
		return high<<U-5|low;
	}
public:
	Set():summary(0){
		for(int i=0;i<(1<<5);i++)ch[i]=NULL;
	}
	~Set(){clear();}
	void clear(){
		summary=0;
		for(int i=0;i<(1<<5);i++){
			if(ch[i])delete ch[i];
			ch[i]=NULL;
		}
	}
	void insert(int v){
		int high=high_bits(v);
		summary|=1<<high;
		if(!ch[high])ch[high]=new Set<U-5>();
		ch[high]->insert(low_bits(v));
	}
	bool erase(int v){
		int high=high_bits(v);
		if(!ch[high])return true;
		if(!ch[high]->erase(low_bits(v))){
			delete ch[high];
			ch[high]=NULL;			
			return summary&=~(1<<high);
		}
		return true;
	}
	int nextvalue(int v)const{
		int high=high_bits(v);
		int low=low_bits(v);
		int a;
		if(ch[high] && (a=ch[high]->nextvalue(low))!=-1){
			return index(high,a);
		}else{
			high=summary&~((1<<high)-1)&~(1<<high);
			if(!high)return -1;
			high=highest_pop(high&-high);
			return index(high,ch[high]->min());
		}
	}
	int prevvalue(int v)const{
		int high=high_bits(v);
		int low=low_bits(v);
		int a;
		if(ch[high] && (a=ch[high]->prevvalue(low))!=-1){
			return index(high,a);
		}else{
			high=summary&((1<<high)-1);
			if(!high)return -1;
			high=highest_pop(high);
			return index(high,ch[high]->max());
		}
	}
	int min()const{
		if(!summary)return -1;
		int high=highest_pop(summary&-summary);
		return index(high,ch[high]->min());
	}
	int max()const{
		if(!summary)return -1;
		int high=highest_pop(summary);
		return index(high,ch[high]->max());
	}
	bool member(int v)const{
		int high=high_bits(v);
		return ch[high] && ch[high]->member(low_bits(v));
	}
};
template<> 
class Set<5>{
	unsigned int summary;
public:
	Set():summary(0){}
	void clear(){summary=0;}
	void insert(int v){
		summary|=1<<v;
	}
	bool erase(int v){
		return summary&=~(1<<v);
	}
	int nextvalue(int v)const{
		int a=summary&~((1<<v)-1)&~(1<<v);
		if(!a)return -1;
		return highest_pop(a&-a);
	}
	int prevvalue(int v)const{
		int a=summary&((1<<v)-1);
		if(!a)return -1;
		return highest_pop(a);
	}
	int min()const{
		if(!summary)return -1;
		return highest_pop(summary&-summary);
	}
	int max()const{
		if(!summary)return -1;
		return highest_pop(summary);
	}
	bool member(int v)const{
		return summary>>v&1;
	}
};
Set<15> xset[20011];
int main(){
	int n,ans=0;
	cin>>n;
	rep(i,n){
		bool hit=false;
		int x,y;
		cin>>x>>y;
		for(int a=max(0,y-10);!hit&&a<=y+10;a++){
			int b;
			b=xset[a].nextvalue(x);
			if(b!=-1&&(a-y)*(a-y)+(b-x)*(b-x)<20*20)hit=true;
			b=xset[a].prevvalue(x+1);
			if(b!=-1&&(a-y)*(a-y)+(b-x)*(b-x)<20*20)hit=true;
		}
		if(!hit){
			xset[y].insert(x);
			ans++;
		}
	}
	cout<<ans<<endl;
	return 0;
}
            
            
            
        
            
hirokazu1020