結果
問題 | No.801 エレベーター |
ユーザー | kusomushi |
提出日時 | 2019-07-30 03:46:56 |
言語 | Java21 (openjdk 21) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,811 bytes |
コンパイル時間 | 3,690 ms |
コンパイル使用メモリ | 78,628 KB |
実行使用メモリ | 46,592 KB |
最終ジャッジ日時 | 2024-07-02 15:36:03 |
合計ジャッジ時間 | 13,398 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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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 | 49 ms
37,016 KB |
testcase_01 | AC | 48 ms
36,824 KB |
testcase_02 | AC | 48 ms
36,824 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | AC | 491 ms
45,804 KB |
ソースコード
import java.io.*; import java.util.Arrays; import java.util.StringJoiner; import java.util.StringTokenizer; import java.util.function.Function; public class Main { static int N, M, K; static int[] L, R; public static void main(String[] args) { FastScanner sc = new FastScanner(System.in); N = sc.nextInt(); M = sc.nextInt(); K = sc.nextInt(); L = new int[M]; R = new int[M]; for (int i = 0; i < M; i++) { // [L, R), 0-origin L[i] = sc.nextInt()-1; R[i] = sc.nextInt(); } System.out.println(solve()); } static int solve() { int[] curr = new int[N]; int[] next = new int[N]; curr[0] = 1; for (int i = 0; i < K; i++) { Arrays.fill(next, 0); int[] cum = new int[N+1]; for (int j = 0; j < N; j++) { cum[j+1] = cum[j] + curr[j]; cum[j+1] %= MOD; } int[] imos = new int[N+1]; for (int j = 0; j < M; j++) { // [L, R) int cnt = cum[R[j]] - cum[L[j]]; imos[L[j]] += cnt; imos[L[j]] %= MOD; imos[R[j]] -= cnt; imos[R[j]] += MOD; imos[R[j]] %= MOD; } for (int j = 0; j < N; j++) { imos[j+1] += imos[j]; imos[j+1] %= MOD; } for (int j = 0; j < N; j++) { next[j] = imos[j]; } int[] t = curr; curr = next; next = t; } return curr[N-1]; } static int MOD = 1_000_000_007; @SuppressWarnings("unused") static class FastScanner { private BufferedReader reader; private StringTokenizer tokenizer; FastScanner(InputStream in) { reader = new BufferedReader(new InputStreamReader(in)); tokenizer = null; } String next() { if (tokenizer == null || !tokenizer.hasMoreTokens()) { try { tokenizer = new StringTokenizer(reader.readLine()); } catch (IOException e) { throw new RuntimeException(e); } } return tokenizer.nextToken(); } String nextLine() { if (tokenizer == null || !tokenizer.hasMoreTokens()) { try { return reader.readLine(); } catch (IOException e) { throw new RuntimeException(e); } } return tokenizer.nextToken("\n"); } long nextLong() { return Long.parseLong(next()); } int nextInt() { return Integer.parseInt(next()); } int[] nextIntArray(int n) { int[] a = new int[n]; for (int i = 0; i < n; i++) a[i] = nextInt(); return a; } int[] nextIntArray(int n, int delta) { int[] a = new int[n]; for (int i = 0; i < n; i++) a[i] = nextInt() + delta; return a; } long[] nextLongArray(int n) { long[] a = new long[n]; for (int i = 0; i < n; i++) a[i] = nextLong(); return a; } } static <A> void writeLines(A[] as, Function<A, String> f) { PrintWriter pw = new PrintWriter(System.out); for (A a : as) { pw.println(f.apply(a)); } pw.flush(); } static void writeLines(int[] as) { PrintWriter pw = new PrintWriter(System.out); for (int a : as) pw.println(a); pw.flush(); } static void writeLines(long[] as) { PrintWriter pw = new PrintWriter(System.out); for (long a : as) pw.println(a); pw.flush(); } static int max(int... as) { int max = Integer.MIN_VALUE; for (int a : as) max = Math.max(a, max); return max; } static int min(int... as) { int min = Integer.MAX_VALUE; for (int a : as) min = Math.min(a, min); return min; } static void debug(Object... args) { StringJoiner j = new StringJoiner(" "); for (Object arg : args) { if (arg instanceof int[]) j.add(Arrays.toString((int[]) arg)); else if (arg instanceof long[]) j.add(Arrays.toString((long[]) arg)); else if (arg instanceof double[]) j.add(Arrays.toString((double[]) arg)); else if (arg instanceof Object[]) j.add(Arrays.toString((Object[]) arg)); else j.add(arg.toString()); } System.err.println(j.toString()); } }