結果
問題 | No.491 10^9+1と回文 |
ユーザー | tanzaku |
提出日時 | 2017-03-10 23:48:31 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 216 ms / 1,000 ms |
コード長 | 1,576 bytes |
コンパイル時間 | 4,213 ms |
コンパイル使用メモリ | 77,856 KB |
実行使用メモリ | 59,300 KB |
最終ジャッジ日時 | 2024-04-08 16:03:31 |
合計ジャッジ時間 | 24,257 ms |
ジャッジサーバーID (参考情報) |
judge11 / judge13 |
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 | 160 ms
57,960 KB |
testcase_01 | AC | 156 ms
57,932 KB |
testcase_02 | AC | 155 ms
58,092 KB |
testcase_03 | AC | 204 ms
59,276 KB |
testcase_04 | AC | 171 ms
58,072 KB |
testcase_05 | AC | 198 ms
59,292 KB |
testcase_06 | AC | 212 ms
59,292 KB |
testcase_07 | AC | 155 ms
58,060 KB |
testcase_08 | AC | 153 ms
58,072 KB |
testcase_09 | AC | 158 ms
57,948 KB |
testcase_10 | AC | 154 ms
57,956 KB |
testcase_11 | AC | 155 ms
58,036 KB |
testcase_12 | AC | 156 ms
58,344 KB |
testcase_13 | AC | 156 ms
57,956 KB |
testcase_14 | AC | 173 ms
57,964 KB |
testcase_15 | AC | 157 ms
58,064 KB |
testcase_16 | AC | 159 ms
57,952 KB |
testcase_17 | AC | 156 ms
57,940 KB |
testcase_18 | AC | 153 ms
57,968 KB |
testcase_19 | AC | 156 ms
58,328 KB |
testcase_20 | AC | 158 ms
58,076 KB |
testcase_21 | AC | 152 ms
57,956 KB |
testcase_22 | AC | 153 ms
58,272 KB |
testcase_23 | AC | 168 ms
56,320 KB |
testcase_24 | AC | 153 ms
58,068 KB |
testcase_25 | AC | 157 ms
58,116 KB |
testcase_26 | AC | 155 ms
57,920 KB |
testcase_27 | AC | 138 ms
57,720 KB |
testcase_28 | AC | 153 ms
58,044 KB |
testcase_29 | AC | 154 ms
58,336 KB |
testcase_30 | AC | 169 ms
58,224 KB |
testcase_31 | AC | 156 ms
58,492 KB |
testcase_32 | AC | 153 ms
58,060 KB |
testcase_33 | AC | 154 ms
58,032 KB |
testcase_34 | AC | 155 ms
58,024 KB |
testcase_35 | AC | 166 ms
58,476 KB |
testcase_36 | AC | 156 ms
57,948 KB |
testcase_37 | AC | 153 ms
57,952 KB |
testcase_38 | AC | 156 ms
57,952 KB |
testcase_39 | AC | 156 ms
58,092 KB |
testcase_40 | AC | 155 ms
58,020 KB |
testcase_41 | AC | 155 ms
57,980 KB |
testcase_42 | AC | 157 ms
57,908 KB |
testcase_43 | AC | 151 ms
57,960 KB |
testcase_44 | AC | 153 ms
57,976 KB |
testcase_45 | AC | 154 ms
58,060 KB |
testcase_46 | AC | 155 ms
58,020 KB |
testcase_47 | AC | 155 ms
58,136 KB |
testcase_48 | AC | 154 ms
57,960 KB |
testcase_49 | AC | 155 ms
57,956 KB |
testcase_50 | AC | 156 ms
58,096 KB |
testcase_51 | AC | 170 ms
57,956 KB |
testcase_52 | AC | 156 ms
57,956 KB |
testcase_53 | AC | 155 ms
58,448 KB |
testcase_54 | AC | 157 ms
58,456 KB |
testcase_55 | AC | 156 ms
57,976 KB |
testcase_56 | AC | 155 ms
57,944 KB |
testcase_57 | AC | 157 ms
56,232 KB |
testcase_58 | AC | 168 ms
58,064 KB |
testcase_59 | AC | 156 ms
57,972 KB |
testcase_60 | AC | 157 ms
57,956 KB |
testcase_61 | AC | 158 ms
57,904 KB |
testcase_62 | AC | 154 ms
57,988 KB |
testcase_63 | AC | 171 ms
57,936 KB |
testcase_64 | AC | 158 ms
58,100 KB |
testcase_65 | AC | 157 ms
58,204 KB |
testcase_66 | AC | 160 ms
58,072 KB |
testcase_67 | AC | 206 ms
59,204 KB |
testcase_68 | AC | 154 ms
57,956 KB |
testcase_69 | AC | 154 ms
58,184 KB |
testcase_70 | AC | 146 ms
57,792 KB |
testcase_71 | AC | 156 ms
58,060 KB |
testcase_72 | AC | 156 ms
58,020 KB |
testcase_73 | AC | 155 ms
58,184 KB |
testcase_74 | AC | 157 ms
57,952 KB |
testcase_75 | AC | 155 ms
58,032 KB |
testcase_76 | AC | 157 ms
57,928 KB |
testcase_77 | AC | 153 ms
57,976 KB |
testcase_78 | AC | 158 ms
58,360 KB |
testcase_79 | AC | 156 ms
57,976 KB |
testcase_80 | AC | 155 ms
58,052 KB |
testcase_81 | AC | 154 ms
58,020 KB |
testcase_82 | AC | 154 ms
57,952 KB |
testcase_83 | AC | 158 ms
57,952 KB |
testcase_84 | AC | 157 ms
58,184 KB |
testcase_85 | AC | 155 ms
57,940 KB |
testcase_86 | AC | 155 ms
58,080 KB |
testcase_87 | AC | 155 ms
58,076 KB |
testcase_88 | AC | 154 ms
58,324 KB |
testcase_89 | AC | 158 ms
58,040 KB |
testcase_90 | AC | 154 ms
58,092 KB |
testcase_91 | AC | 157 ms
57,980 KB |
testcase_92 | AC | 157 ms
57,952 KB |
testcase_93 | AC | 156 ms
57,944 KB |
testcase_94 | AC | 160 ms
57,988 KB |
testcase_95 | AC | 155 ms
58,420 KB |
testcase_96 | AC | 156 ms
58,084 KB |
testcase_97 | AC | 204 ms
59,280 KB |
testcase_98 | AC | 213 ms
59,296 KB |
testcase_99 | AC | 208 ms
59,296 KB |
testcase_100 | AC | 205 ms
59,288 KB |
testcase_101 | AC | 208 ms
59,224 KB |
testcase_102 | AC | 203 ms
59,300 KB |
testcase_103 | AC | 211 ms
59,276 KB |
testcase_104 | AC | 216 ms
59,264 KB |
testcase_105 | AC | 212 ms
59,216 KB |
ソースコード
import java.io.BufferedInputStream; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.*; public class _491 { public static void main(String[] args) throws IOException { new _491().solve(); } void solve() throws IOException { try (final Scanner in = new Scanner(System.in)) { n = in.nextLong(); long ans = 0; for (int i = 1; i <= 9; i++) { ans += rec(i, 0, 0); } System.out.println(ans); } } long n; char[] cs; long x = 1000000000+1; long[] digits = new long[20]; boolean palindrome(long cur) { int len = 0; while (cur > 0) { digits[len++] = cur % 10; cur /= 10; } for (int i = 0; i < len / 2; i++) { if (digits[i] != digits[len-1-i]) return false; } return true; } long rec(int len, int idx, long cur) { if (len % 2 == 0) { if (2*idx == len) { long c = cur; for (int i = 0; i < len / 2; i++) { cur = cur * 10 + c % 10; c /= 10; } // if (cur * x <= n) dump(cur); return cur <= n / x && palindrome(cur * x) ? 1 : 0; } } else { if (2*idx-1 == len) { long c = cur / 10; for (int i = 0; i < len / 2; i++) { cur = cur * 10 + c % 10; c /= 10; } // if (cur * x <= n) dump(cur); return cur <= n / x && palindrome(cur * x) ? 1 : 0; } } long ans = 0; for (int i = 0; i < 10; i++) { if (cur == 0 && i == 0) continue; ans += rec(len, idx + 1, cur * 10 + i); } return ans; } // for debug static void dump(Object... o) { System.err.println(Arrays.deepToString(o)); } }