結果
問題 | No.860 買い物 |
ユーザー | 37zigen |
提出日時 | 2019-08-10 12:38:31 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 189 ms / 1,000 ms |
コード長 | 2,947 bytes |
コンパイル時間 | 2,334 ms |
コンパイル使用メモリ | 75,680 KB |
実行使用メモリ | 56,136 KB |
最終ジャッジ日時 | 2023-09-26 23:20:50 |
合計ジャッジ時間 | 5,815 ms |
ジャッジサーバーID (参考情報) |
judge13 / judge11 |
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
49,332 KB |
testcase_01 | AC | 44 ms
49,544 KB |
testcase_02 | AC | 45 ms
49,212 KB |
testcase_03 | AC | 44 ms
49,448 KB |
testcase_04 | AC | 45 ms
49,360 KB |
testcase_05 | AC | 45 ms
49,372 KB |
testcase_06 | AC | 83 ms
49,012 KB |
testcase_07 | AC | 183 ms
54,868 KB |
testcase_08 | AC | 185 ms
54,272 KB |
testcase_09 | AC | 180 ms
54,644 KB |
testcase_10 | AC | 182 ms
54,844 KB |
testcase_11 | AC | 133 ms
54,252 KB |
testcase_12 | AC | 141 ms
54,060 KB |
testcase_13 | AC | 189 ms
55,136 KB |
testcase_14 | AC | 177 ms
54,784 KB |
testcase_15 | AC | 175 ms
56,136 KB |
testcase_16 | AC | 179 ms
54,860 KB |
testcase_17 | AC | 151 ms
54,280 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.util.Arrays; import java.util.NoSuchElementException; import java.util.PriorityQueue; class Main { public static void main(String[] args) { new Main().run(); } void run() { Scanner sc = new Scanner(); int N = sc.nextInt(); long[] C = new long[N]; long[] D = new long[N]; long ans = 0; for (int i = 0; i < N; ++i) { C[i] = sc.nextLong(); D[i] = sc.nextLong(); ans += C[i] + D[i]; } class Pair implements Comparable<Pair> { long v; long min; public Pair(long v, long min) { this.v = v; this.min = min; } @Override public int compareTo(Pair o) { return -Long.compare(min, o.min); } } PriorityQueue<Pair> pq = new PriorityQueue<>(); long pending = D[0] - C[0]; pq.add(new Pair(D[0], C[0])); for (int i = 1; i < N; ++i) { pq.add(new Pair(D[i] + pending, C[i])); pending = Math.max(pending, D[i] - C[i] + pending); long max = -Long.MAX_VALUE / 3; while (!pq.isEmpty() && pq.peek().min >= C[i]) { Pair p = pq.poll(); max = Math.max(max, p.v); pending = Math.max(max - C[i], pending); } if (max != -Long.MAX_VALUE / 3) pq.add(new Pair(max, C[i])); } System.out.println(ans - pending); } void tr(Object... objects) { System.out.println(Arrays.deepToString(objects)); } } class Scanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; private boolean hasNextByte() { if (ptr < buflen) { return true; } else { ptr = 0; try { buflen = in.read(buffer); } catch (IOException e) { e.printStackTrace(); } if (buflen <= 0) { return false; } } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1; } private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126; } private void skipUnprintable() { while (hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; } public boolean hasNext() { skipUnprintable(); return hasNextByte(); } public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while (isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public int nextInt() { return (int) nextLong(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while (true) { if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; } else if (b == -1 || !isPrintableChar(b)) { return minus ? -n : n; } else { throw new NumberFormatException(); } b = readByte(); } } }