#458741 (Java21) No.732 3PrimeCounting

• 問題: No.732 3PrimeCounting
• ユーザー: 37zigen
• 提出日時: 2020-04-04 16:30:39
• 言語: Java21 (openjdk 21)
• 結果: AC
• 実行時間: 2,401 ms / 3,000 ms
• コード長: 1,495 bytes
• コンパイル時間: 2,460 ms
• コンパイル使用メモリ: 75,776 KB
• 実行使用メモリ: 60,964 KB
• 最終ジャッジ日時: 2023-09-16 05:58:04
• 合計ジャッジ時間: 53,075 ms
• ジャッジサーバーID （参考情報）: judge13 / judge11

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	164 ms; 57,816 KB
testcase_01	AC	166 ms; 58,048 KB
testcase_02	AC	180 ms; 58,788 KB
testcase_03	AC	178 ms; 58,920 KB
testcase_04	AC	183 ms; 58,652 KB
testcase_05	AC	187 ms; 59,064 KB
testcase_06	AC	182 ms; 58,668 KB
testcase_07	AC	179 ms; 58,652 KB
testcase_08	AC	181 ms; 58,968 KB
testcase_09	AC	182 ms; 58,968 KB
testcase_10	AC	182 ms; 59,028 KB
testcase_11	AC	181 ms; 58,816 KB
testcase_12	AC	182 ms; 59,084 KB
testcase_13	AC	181 ms; 58,684 KB
testcase_14	AC	182 ms; 59,024 KB
testcase_15	AC	184 ms; 59,224 KB
testcase_16	AC	182 ms; 58,864 KB
testcase_17	AC	181 ms; 58,948 KB
testcase_18	AC	181 ms; 58,884 KB
testcase_19	AC	185 ms; 58,680 KB
testcase_20	AC	198 ms; 58,684 KB
testcase_21	AC	220 ms; 58,604 KB
testcase_22	AC	219 ms; 58,480 KB
testcase_23	AC	192 ms; 58,984 KB
testcase_24	AC	188 ms; 59,176 KB
testcase_25	AC	265 ms; 58,672 KB
testcase_26	AC	245 ms; 58,684 KB
testcase_27	AC	200 ms; 60,744 KB
testcase_28	AC	204 ms; 58,984 KB
testcase_29	AC	216 ms; 58,812 KB
testcase_30	AC	215 ms; 58,668 KB
testcase_31	AC	225 ms; 58,488 KB
testcase_32	AC	255 ms; 58,792 KB
testcase_33	AC	255 ms; 58,788 KB
testcase_34	AC	250 ms; 58,684 KB
testcase_35	AC	241 ms; 58,976 KB
testcase_36	AC	237 ms; 58,708 KB
testcase_37	AC	196 ms; 58,792 KB
testcase_38	AC	192 ms; 58,976 KB
testcase_39	AC	242 ms; 58,820 KB
testcase_40	AC	237 ms; 58,816 KB
testcase_41	AC	237 ms; 58,844 KB
testcase_42	AC	234 ms; 58,792 KB
testcase_43	AC	219 ms; 58,664 KB
testcase_44	AC	219 ms; 58,820 KB
testcase_45	AC	202 ms; 59,016 KB
testcase_46	AC	208 ms; 59,124 KB
testcase_47	AC	208 ms; 58,868 KB
testcase_48	AC	271 ms; 58,660 KB
testcase_49	AC	272 ms; 58,788 KB
testcase_50	AC	220 ms; 58,476 KB
testcase_51	AC	222 ms; 58,872 KB
testcase_52	AC	202 ms; 59,140 KB
testcase_53	AC	348 ms; 59,040 KB
testcase_54	AC	1,188 ms; 58,960 KB
testcase_55	AC	1,172 ms; 58,864 KB
testcase_56	AC	1,138 ms; 59,180 KB
testcase_57	AC	506 ms; 59,408 KB
testcase_58	AC	496 ms; 58,976 KB
testcase_59	AC	347 ms; 58,856 KB
testcase_60	AC	617 ms; 58,756 KB
testcase_61	AC	593 ms; 59,120 KB
testcase_62	AC	1,369 ms; 59,076 KB
testcase_63	AC	847 ms; 59,232 KB
testcase_64	AC	680 ms; 58,820 KB
testcase_65	AC	694 ms; 58,828 KB
testcase_66	AC	186 ms; 58,848 KB
testcase_67	AC	186 ms; 58,788 KB
testcase_68	AC	1,267 ms; 58,684 KB
testcase_69	AC	1,230 ms; 58,800 KB
testcase_70	AC	1,224 ms; 58,968 KB
testcase_71	AC	1,178 ms; 59,092 KB
testcase_72	AC	795 ms; 58,832 KB
testcase_73	AC	1,809 ms; 59,184 KB
testcase_74	AC	1,866 ms; 57,316 KB
testcase_75	AC	261 ms; 59,020 KB
testcase_76	AC	1,257 ms; 59,088 KB
testcase_77	AC	520 ms; 58,664 KB
testcase_78	AC	1,520 ms; 58,864 KB
testcase_79	AC	1,256 ms; 58,656 KB
testcase_80	AC	1,436 ms; 58,980 KB
testcase_81	AC	1,179 ms; 58,956 KB
testcase_82	AC	195 ms; 58,692 KB
testcase_83	AC	503 ms; 58,676 KB
testcase_84	AC	552 ms; 58,660 KB
testcase_85	AC	1,090 ms; 58,800 KB
testcase_86	AC	1,502 ms; 58,692 KB
testcase_87	AC	2,257 ms; 59,032 KB
testcase_88	AC	2,401 ms; 60,964 KB

ソースコード

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		long curtime=System.currentTimeMillis();
		new Main().run();
		System.err.println(System.currentTimeMillis()-curtime);
	}
	
	int MAX=300001;
	boolean[] isPrime=new boolean[MAX];
	ArrayList<Integer> primes=new ArrayList<>();
	{
		Arrays.fill(isPrime, true);
		isPrime[0]=isPrime[1]=false;
		for(int i=2;i<isPrime.length;++i) {
			if(!isPrime[i])continue;
			primes.add(i);
			for(long j=(long)i*i;j<isPrime.length;j+=i)
				isPrime[(int)j]=false;
		}
	}
	
	void run() {
		Scanner sc=new Scanner(System.in);
		int N=sc.nextInt();//5<=N<=1e5
		long[] dp=new long[MAX];
		for(int i=0;i<primes.size();++i) {
			int p=primes.get(i);
			if(p>N)break;
			++dp[p+p];
			for(int j=i+1;j<primes.size();++j) {
				int q=primes.get(j);
				if(q>N)break;
				dp[p+q]+=2;
			}
		}
		
		long ans=0;
		int src=0;
		for(int p:primes) {
			if(p>N)break;
			while(src<primes.size()&&primes.get(src)-p<=0)++src;
			for(int i=src;i<primes.size();++i) {
				int target=primes.get(i);
				ans+=dp[target-p];
			}
		}
		//a+b+c が　素数　かつ　a==b==c　は存在しない。
		for(int p:primes) {
			if(p>N)break;
			for(int q:primes) {
				if(q>N)break;
				if(isPrime[p+p+q]) {
					ans-=3;
				}
			}
		}
		if(ans%6!=0)throw new AssertionError();
		System.out.println(ans/6);
	}
	
	void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));}
}