結果
問題 | No.308 素数は通れません |
ユーザー | uafr_cs |
提出日時 | 2015-12-03 20:14:06 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 141 ms / 1,000 ms |
コード長 | 3,430 bytes |
コンパイル時間 | 3,289 ms |
コンパイル使用メモリ | 86,876 KB |
実行使用メモリ | 42,176 KB |
最終ジャッジ日時 | 2024-05-05 18:36:11 |
合計ジャッジ時間 | 17,052 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 107 ms
41,160 KB |
testcase_01 | AC | 109 ms
39,776 KB |
testcase_02 | AC | 110 ms
40,188 KB |
testcase_03 | AC | 110 ms
41,248 KB |
testcase_04 | AC | 111 ms
40,812 KB |
testcase_05 | AC | 109 ms
40,936 KB |
testcase_06 | AC | 106 ms
39,916 KB |
testcase_07 | AC | 98 ms
39,900 KB |
testcase_08 | AC | 108 ms
41,072 KB |
testcase_09 | AC | 132 ms
40,056 KB |
testcase_10 | AC | 107 ms
40,060 KB |
testcase_11 | AC | 110 ms
40,872 KB |
testcase_12 | AC | 119 ms
40,908 KB |
testcase_13 | AC | 120 ms
41,216 KB |
testcase_14 | AC | 118 ms
41,084 KB |
testcase_15 | AC | 106 ms
41,388 KB |
testcase_16 | AC | 95 ms
40,216 KB |
testcase_17 | AC | 116 ms
41,204 KB |
testcase_18 | AC | 112 ms
41,172 KB |
testcase_19 | AC | 109 ms
41,476 KB |
testcase_20 | AC | 95 ms
40,452 KB |
testcase_21 | AC | 110 ms
41,216 KB |
testcase_22 | AC | 120 ms
41,320 KB |
testcase_23 | AC | 115 ms
41,264 KB |
testcase_24 | AC | 113 ms
41,252 KB |
testcase_25 | AC | 115 ms
41,396 KB |
testcase_26 | AC | 108 ms
41,148 KB |
testcase_27 | AC | 111 ms
41,468 KB |
testcase_28 | AC | 107 ms
41,428 KB |
testcase_29 | AC | 105 ms
41,220 KB |
testcase_30 | AC | 111 ms
40,940 KB |
testcase_31 | AC | 127 ms
41,052 KB |
testcase_32 | AC | 103 ms
40,044 KB |
testcase_33 | AC | 111 ms
41,056 KB |
testcase_34 | AC | 112 ms
41,500 KB |
testcase_35 | AC | 103 ms
40,984 KB |
testcase_36 | AC | 98 ms
40,232 KB |
testcase_37 | AC | 105 ms
41,124 KB |
testcase_38 | AC | 104 ms
41,256 KB |
testcase_39 | AC | 96 ms
40,008 KB |
testcase_40 | AC | 111 ms
41,320 KB |
testcase_41 | AC | 106 ms
41,224 KB |
testcase_42 | AC | 98 ms
40,024 KB |
testcase_43 | AC | 109 ms
40,916 KB |
testcase_44 | AC | 105 ms
41,256 KB |
testcase_45 | AC | 105 ms
41,040 KB |
testcase_46 | AC | 112 ms
41,084 KB |
testcase_47 | AC | 95 ms
40,096 KB |
testcase_48 | AC | 92 ms
39,744 KB |
testcase_49 | AC | 104 ms
40,932 KB |
testcase_50 | AC | 105 ms
40,944 KB |
testcase_51 | AC | 106 ms
41,224 KB |
testcase_52 | AC | 107 ms
41,264 KB |
testcase_53 | AC | 105 ms
41,228 KB |
testcase_54 | AC | 103 ms
41,088 KB |
testcase_55 | AC | 105 ms
41,072 KB |
testcase_56 | AC | 107 ms
40,924 KB |
testcase_57 | AC | 115 ms
41,608 KB |
testcase_58 | AC | 98 ms
40,092 KB |
testcase_59 | AC | 107 ms
40,616 KB |
testcase_60 | AC | 98 ms
39,996 KB |
testcase_61 | AC | 108 ms
41,420 KB |
testcase_62 | AC | 110 ms
41,204 KB |
testcase_63 | AC | 112 ms
41,080 KB |
testcase_64 | AC | 112 ms
41,128 KB |
testcase_65 | AC | 110 ms
41,148 KB |
testcase_66 | AC | 108 ms
41,120 KB |
testcase_67 | AC | 108 ms
41,120 KB |
testcase_68 | AC | 120 ms
41,800 KB |
testcase_69 | AC | 112 ms
41,116 KB |
testcase_70 | AC | 109 ms
41,128 KB |
testcase_71 | AC | 99 ms
40,208 KB |
testcase_72 | AC | 108 ms
41,072 KB |
testcase_73 | AC | 107 ms
41,260 KB |
testcase_74 | AC | 107 ms
41,296 KB |
testcase_75 | AC | 99 ms
40,216 KB |
testcase_76 | AC | 118 ms
41,484 KB |
testcase_77 | AC | 101 ms
40,052 KB |
testcase_78 | AC | 100 ms
39,756 KB |
testcase_79 | AC | 102 ms
40,220 KB |
testcase_80 | AC | 129 ms
41,596 KB |
testcase_81 | AC | 124 ms
41,316 KB |
testcase_82 | AC | 105 ms
40,944 KB |
testcase_83 | AC | 100 ms
39,936 KB |
testcase_84 | AC | 122 ms
41,320 KB |
testcase_85 | AC | 99 ms
40,732 KB |
testcase_86 | AC | 124 ms
41,396 KB |
testcase_87 | AC | 133 ms
41,628 KB |
testcase_88 | AC | 105 ms
40,744 KB |
testcase_89 | AC | 110 ms
41,292 KB |
testcase_90 | AC | 126 ms
41,492 KB |
testcase_91 | AC | 94 ms
39,876 KB |
testcase_92 | AC | 107 ms
40,908 KB |
testcase_93 | AC | 106 ms
41,060 KB |
testcase_94 | AC | 98 ms
40,048 KB |
testcase_95 | AC | 97 ms
40,040 KB |
testcase_96 | AC | 111 ms
41,252 KB |
testcase_97 | AC | 96 ms
40,040 KB |
testcase_98 | AC | 102 ms
41,252 KB |
testcase_99 | AC | 98 ms
40,164 KB |
testcase_100 | AC | 107 ms
40,988 KB |
testcase_101 | AC | 141 ms
42,176 KB |
testcase_102 | AC | 104 ms
41,168 KB |
testcase_103 | AC | 108 ms
41,196 KB |
testcase_104 | AC | 94 ms
40,044 KB |
testcase_105 | AC | 94 ms
39,992 KB |
testcase_106 | AC | 106 ms
40,944 KB |
ソースコード
import java.math.BigInteger; import java.util.Arrays; import java.util.HashSet; import java.util.LinkedList; import java.util.Scanner; import java.util.Set; public class Main { public static int simulate(final int N){ boolean[] is_prime = new boolean[N + 1]; Arrays.fill(is_prime, 2, N + 1, true); for(int i = 2; i * i <= N; i++){ if(!is_prime[i]){ continue; } for(int j = i * 2; j <= N; j += i){ is_prime[j] = false; } } if(is_prime[N]){ return -1; } boolean[] visited = new boolean[N]; for(int mid = 1; mid <= N; mid++){ Arrays.fill(visited, false); LinkedList<Integer> queue = new LinkedList<Integer>(); queue.add(0); visited[0] = true; while(!queue.isEmpty()){ final int pos = queue.poll(); final int number = pos + 1; if(number == N){ break; } //System.out.println(mid + " => " + pos + " : " + (pos % mid)); if(pos % mid > 0 && !is_prime[number - 1] && !visited[pos - 1]){ queue.add(pos - 1); visited[pos - 1] = true; } if(pos % mid < (mid - 1) && !is_prime[number + 1] && !visited[pos + 1]){ queue.add(pos + 1); visited[pos + 1] = true; } if((pos - mid) > 0 && !is_prime[number - mid] && !visited[pos - mid]){ queue.add(pos - mid); visited[pos - mid] = true; } if((pos + mid) < N && !is_prime[number + mid] && !visited[pos + mid]){ queue.add(pos + mid); visited[pos + mid] = true; } } if(visited[N - 1]){ return mid; } } return -1; } public static int smart(final BigInteger N){ final BigInteger four = BigInteger.valueOf(4); final BigInteger six = BigInteger.valueOf(6); final BigInteger eight = BigInteger.valueOf(8); final BigInteger nine = BigInteger.valueOf(9); final BigInteger ten = BigInteger.valueOf(10); final BigInteger twelve = BigInteger.valueOf(12); final BigInteger fourteen = BigInteger.valueOf(14); final BigInteger fifteen = BigInteger.valueOf(15); final BigInteger sixteen = BigInteger.valueOf(16); final BigInteger twenty = BigInteger.valueOf(20); final BigInteger twentyone = BigInteger.valueOf(21); final BigInteger twentytwo = BigInteger.valueOf(22); final BigInteger twentyfour = BigInteger.valueOf(24); final BigInteger twentyfive = BigInteger.valueOf(25); if(N.equals(four)){ return 3; }else if(N.equals(six)){ return 5; }else if(N.equals(eight) || N.equals(nine) || N.equals(ten) || N.equals(fifteen) || N.equals(sixteen) || N.equals(twentytwo)){ return 7; }else if(N.equals(twelve)){ return 11; }else if(N.equals(fourteen)){ return 13; }else if(N.equals(twenty) || N.equals(twentyone)){ return 19; }else if(N.equals(twentyfour) || N.equals(twentyfive)){ return 23; }else if(N.subtract(BigInteger.ONE).mod(eight).equals(BigInteger.ZERO) && N.subtract(eight).isProbablePrime(1000000000)){ return 14; }else{ return 8; } } // シュミレーションして法則性を掴むべき. public static void main(String[] args) { Scanner sc = new Scanner(System.in); /* for(int i = 2; i <= 10000; i++){ final int sim_value = simulate(i); if(sim_value > 0){ final int big_value = smart(BigInteger.valueOf(i)); if(sim_value != big_value){ System.out.printf("%05d : %d, %d\n", i, sim_value, big_value); } } } */ BigInteger N = new BigInteger(sc.next()); System.out.println(smart(N)); } }