結果
問題 | No.527 ナップサック容量問題 |
ユーザー | tenten |
提出日時 | 2021-11-02 11:57:37 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 812 ms / 2,000 ms |
コード長 | 3,229 bytes |
コンパイル時間 | 3,518 ms |
コンパイル使用メモリ | 87,388 KB |
実行使用メモリ | 139,352 KB |
最終ジャッジ日時 | 2024-10-11 10:29:32 |
合計ジャッジ時間 | 13,354 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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 | 53 ms
36,932 KB |
testcase_01 | AC | 55 ms
37,340 KB |
testcase_02 | AC | 55 ms
36,920 KB |
testcase_03 | AC | 55 ms
37,012 KB |
testcase_04 | AC | 53 ms
37,292 KB |
testcase_05 | AC | 129 ms
49,164 KB |
testcase_06 | AC | 578 ms
108,064 KB |
testcase_07 | AC | 436 ms
89,264 KB |
testcase_08 | AC | 115 ms
45,480 KB |
testcase_09 | AC | 55 ms
37,200 KB |
testcase_10 | AC | 639 ms
121,360 KB |
testcase_11 | AC | 234 ms
59,328 KB |
testcase_12 | AC | 150 ms
53,028 KB |
testcase_13 | AC | 565 ms
108,000 KB |
testcase_14 | AC | 137 ms
49,964 KB |
testcase_15 | AC | 237 ms
64,016 KB |
testcase_16 | AC | 53 ms
37,364 KB |
testcase_17 | AC | 147 ms
52,676 KB |
testcase_18 | AC | 206 ms
58,120 KB |
testcase_19 | AC | 55 ms
37,308 KB |
testcase_20 | AC | 122 ms
44,956 KB |
testcase_21 | AC | 786 ms
123,564 KB |
testcase_22 | AC | 398 ms
77,068 KB |
testcase_23 | AC | 566 ms
101,408 KB |
testcase_24 | AC | 91 ms
39,788 KB |
testcase_25 | AC | 378 ms
76,100 KB |
testcase_26 | AC | 268 ms
69,040 KB |
testcase_27 | AC | 374 ms
75,988 KB |
testcase_28 | AC | 219 ms
58,948 KB |
testcase_29 | AC | 812 ms
139,352 KB |
testcase_30 | AC | 53 ms
36,920 KB |
testcase_31 | AC | 58 ms
37,316 KB |
testcase_32 | AC | 58 ms
37,244 KB |
testcase_33 | AC | 59 ms
37,176 KB |
testcase_34 | AC | 63 ms
37,324 KB |
testcase_35 | AC | 273 ms
65,832 KB |
testcase_36 | AC | 52 ms
37,324 KB |
testcase_37 | AC | 147 ms
51,908 KB |
testcase_38 | AC | 198 ms
56,752 KB |
testcase_39 | AC | 164 ms
54,616 KB |
ソースコード
import java.io.*; import java.util.*; public class Main { static Nap[] naps; static int[] weights; static int[] values; static ArrayList<HashMap<Integer, Integer>> dp = new ArrayList<>(); public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); int n = sc.nextInt(); int totalW = 0; int totalV = 0; naps = new Nap[n]; for (int i = 0; i < n; i++) { naps[i] = new Nap(sc.nextInt(), sc.nextInt()); totalV += naps[i].value; totalW += naps[i].weight; dp.add(new HashMap<>()); } Arrays.sort(naps); weights = new int[n]; values = new int[n]; weights[0] = naps[0].weight; values[0] = naps[0].value; for (int i = 1; i < n; i++) { weights[i] = weights[i - 1] + naps[i].weight; values[i] = values[i - 1] + naps[i].value; } int v = sc.nextInt(); int left1 = 0; int right1 = totalW; while (right1 - left1 > 1) { int m = (left1 + right1) / 2; if (dfw(n - 1, m) >= v) { right1 = m; } else { left1 = m; } } if (totalV == v) { System.out.println(right1); System.out.println("inf"); return; } int left2 = right1; int right2 = totalW; while (right2 - left2 > 1) { int m = (left2 + right2) / 2; if (dfw(n - 1, m) > v) { right2 = m; } else { left2 = m; } } System.out.println(right1); System.out.println(left2); } static int dfw(int idx, int w) { if (w < 0) { return Integer.MIN_VALUE; } if (idx < 0) { return 0; } if (dp.get(idx).containsKey(w)) { return dp.get(idx).get(w); } if (w >= weights[idx]) { return values[idx]; } int ans = Math.max(dfw(idx - 1, w), dfw(idx - 1, w - naps[idx].weight) + naps[idx].value); dp.get(idx).put(w, ans); return ans; } static class Nap implements Comparable<Nap> { int value; int weight; public Nap(int value, int weight) { this.value = value; this.weight = weight; } public int compareTo(Nap another) { return weight - another.weight; } } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public String nextLine() throws Exception { return br.readLine(); } public String next() throws Exception { if (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }