結果
問題 | No.1765 While Shining |
ユーザー | cyclerecycle9 |
提出日時 | 2021-12-07 05:54:28 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 103 ms / 2,000 ms |
コード長 | 3,973 bytes |
コンパイル時間 | 2,763 ms |
コンパイル使用メモリ | 88,788 KB |
実行使用メモリ | 52,812 KB |
最終ジャッジ日時 | 2023-09-21 16:34:30 |
合計ジャッジ時間 | 6,340 ms |
ジャッジサーバーID (参考情報) |
judge14 / judge12 |
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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 | 44 ms
49,208 KB |
testcase_01 | AC | 44 ms
49,336 KB |
testcase_02 | AC | 44 ms
49,004 KB |
testcase_03 | AC | 44 ms
49,176 KB |
testcase_04 | AC | 45 ms
49,608 KB |
testcase_05 | AC | 46 ms
49,080 KB |
testcase_06 | AC | 45 ms
49,144 KB |
testcase_07 | AC | 44 ms
47,080 KB |
testcase_08 | AC | 46 ms
49,176 KB |
testcase_09 | AC | 92 ms
52,204 KB |
testcase_10 | AC | 103 ms
52,544 KB |
testcase_11 | AC | 94 ms
51,508 KB |
testcase_12 | AC | 94 ms
51,772 KB |
testcase_13 | AC | 97 ms
52,812 KB |
testcase_14 | AC | 100 ms
52,180 KB |
testcase_15 | AC | 99 ms
52,136 KB |
testcase_16 | AC | 87 ms
52,620 KB |
testcase_17 | AC | 99 ms
52,152 KB |
testcase_18 | AC | 99 ms
52,436 KB |
testcase_19 | AC | 101 ms
52,668 KB |
testcase_20 | AC | 98 ms
51,816 KB |
testcase_21 | AC | 100 ms
51,844 KB |
testcase_22 | AC | 103 ms
52,620 KB |
testcase_23 | AC | 92 ms
52,536 KB |
testcase_24 | AC | 99 ms
52,284 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.math.BigDecimal; import java.math.RoundingMode; import java.util.*; import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock; import java.beans.Visibility; import java.io.File; import java.io.FileDescriptor; import java.io.FileOutputStream; import java.io.OutputStream; import java.io.UncheckedIOException; import java.lang.Thread.State; import java.lang.reflect.Field; import java.nio.CharBuffer; import java.nio.charset.CharacterCodingException; import java.nio.charset.CharsetEncoder; import java.nio.charset.StandardCharsets; public class Main { static final long MOD1=1000000007; static final long MOD=998244353; static long ans=0; public static void main(String[] args){ PrintWriter out = new PrintWriter(System.out); InputReader sc=new InputReader(System.in); int n = sc.nextInt(); int[] A = sc.nextIntArray(n); for (int i = 0; i < A.length; i+=2) { A[i] ^= 1; } int[] sum = new int[n]; for (int i = n-2; i >= 0; i--) { if (A[i]==A[i+1]){ sum[i] = sum[i+1] + 1; }else { sum[i] = 1; } } long ans = 0; for (int i = 0; i < n; i++){ if(i%2==0)A[i]^=1; if (A[i]==1){ ans += sum[i]; } } System.out.println(ans); } static class InputReader { private InputStream in; private byte[] buffer = new byte[1024]; private int curbuf; private int lenbuf; public InputReader(InputStream in) { this.in = in; this.curbuf = this.lenbuf = 0; } public boolean hasNextByte() { if (curbuf >= lenbuf) { curbuf = 0; try { lenbuf = in.read(buffer); } catch (IOException e) { throw new InputMismatchException(); } if (lenbuf <= 0) return false; } return true; } private int readByte() { if (hasNextByte()) return buffer[curbuf++]; else return -1; } private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); } private void skip() { while (hasNextByte() && isSpaceChar(buffer[curbuf])) curbuf++; } public boolean hasNext() { skip(); return hasNextByte(); } public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while (!isSpaceChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public int nextInt() { if (!hasNext()) throw new NoSuchElementException(); int c = readByte(); while (isSpaceChar(c)) c = readByte(); boolean minus = false; if (c == '-') { minus = true; c = readByte(); } int res = 0; do { if (c < '0' || c > '9') throw new InputMismatchException(); res = res * 10 + c - '0'; c = readByte(); } while (!isSpaceChar(c)); return (minus) ? -res : res; } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); int c = readByte(); while (isSpaceChar(c)) c = readByte(); boolean minus = false; if (c == '-') { minus = true; c = readByte(); } long res = 0; do { if (c < '0' || c > '9') throw new InputMismatchException(); res = res * 10 + c - '0'; c = readByte(); } while (!isSpaceChar(c)); return (minus) ? -res : res; } public double nextDouble() { return Double.parseDouble(next()); } public int[] nextIntArray(int n) { int[] a = new int[n]; for (int i = 0; i < n; i++) a[i] = nextInt(); return a; } public double[] nextDoubleArray(int n) { double[] a = new double[n]; for (int i = 0; i < n; i++) a[i] = nextDouble(); return a; } public long[] nextLongArray(int n) { long[] a = new long[n]; for (int i = 0; i < n; i++) a[i] = nextLong(); return a; } public char[][] nextCharMap(int n, int m) { char[][] map = new char[n][m]; for (int i = 0; i < n; i++) map[i] = next().toCharArray(); return map; } } }