結果
問題 | No.723 2つの数の和 |
ユーザー | hiromi_ayase |
提出日時 | 2018-08-06 02:58:09 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 229 ms / 2,000 ms |
コード長 | 2,728 bytes |
コンパイル時間 | 2,169 ms |
コンパイル使用メモリ | 94,696 KB |
実行使用メモリ | 50,764 KB |
最終ジャッジ日時 | 2024-09-19 18:08:57 |
合計ジャッジ時間 | 7,155 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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 | 68 ms
38,908 KB |
testcase_01 | AC | 67 ms
38,632 KB |
testcase_02 | AC | 67 ms
38,320 KB |
testcase_03 | AC | 206 ms
45,616 KB |
testcase_04 | AC | 226 ms
46,244 KB |
testcase_05 | AC | 211 ms
50,764 KB |
testcase_06 | AC | 221 ms
46,260 KB |
testcase_07 | AC | 173 ms
43,728 KB |
testcase_08 | AC | 179 ms
45,140 KB |
testcase_09 | AC | 224 ms
46,328 KB |
testcase_10 | AC | 170 ms
44,212 KB |
testcase_11 | AC | 107 ms
40,368 KB |
testcase_12 | AC | 189 ms
45,464 KB |
testcase_13 | AC | 229 ms
46,516 KB |
testcase_14 | AC | 151 ms
42,216 KB |
testcase_15 | AC | 183 ms
44,752 KB |
testcase_16 | AC | 204 ms
45,648 KB |
testcase_17 | AC | 227 ms
45,876 KB |
testcase_18 | AC | 189 ms
45,624 KB |
testcase_19 | AC | 226 ms
46,620 KB |
testcase_20 | AC | 67 ms
38,676 KB |
testcase_21 | AC | 67 ms
38,688 KB |
testcase_22 | AC | 66 ms
38,320 KB |
testcase_23 | AC | 220 ms
46,340 KB |
testcase_24 | AC | 158 ms
43,512 KB |
ソースコード
public class Main { private static void solve() { int n = ni(); int x = ni(); int[] a = na(n); int[] b = new int[100001]; for (int v : a) { b[v] ++; } long ret = 0; for (int s = 0; s <= 100000; s ++) { int t = x - s; if (t < 0 || t > 100000) continue; ret += (long)b[s] * b[t]; } System.out.println(ret); } public static void main(String[] args) { new Thread(null, new Runnable() { @Override public void run() { long start = System.currentTimeMillis(); String debug = args.length > 0 ? args[0] : null; if (debug != null) { try { is = java.nio.file.Files.newInputStream(java.nio.file.Paths.get(debug)); } catch (Exception e) { throw new RuntimeException(e); } } reader = new java.io.BufferedReader(new java.io.InputStreamReader(is), 32768); solve(); out.flush(); tr((System.currentTimeMillis() - start) + "ms"); } }, "", 64000000).start(); } private static java.io.InputStream is = System.in; private static java.io.PrintWriter out = new java.io.PrintWriter(System.out); private static java.util.StringTokenizer tokenizer = null; private static java.io.BufferedReader reader; public static String next() { while (tokenizer == null || !tokenizer.hasMoreTokens()) { try { tokenizer = new java.util.StringTokenizer(reader.readLine()); } catch (Exception e) { throw new RuntimeException(e); } } return tokenizer.nextToken(); } private static double nd() { return Double.parseDouble(next()); } private static long nl() { return Long.parseLong(next()); } private static int[] na(int n) { int[] a = new int[n]; for (int i = 0; i < n; i++) a[i] = ni(); return a; } private static char[] ns() { return next().toCharArray(); } private static long[] nal(int n) { long[] a = new long[n]; for (int i = 0; i < n; i++) a[i] = nl(); return a; } private static int[][] ntable(int n, int m) { int[][] table = new int[n][m]; for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { table[i][j] = ni(); } } return table; } private static int[][] nlist(int n, int m) { int[][] table = new int[m][n]; for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { table[j][i] = ni(); } } return table; } private static int ni() { return Integer.parseInt(next()); } private static void tr(Object... o) { if (is != System.in) System.out.println(java.util.Arrays.deepToString(o)); } }