結果
問題 | No.4 おもりと天秤 |
ユーザー | maruyuki95 |
提出日時 | 2020-07-07 20:50:05 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 184 ms / 5,000 ms |
コード長 | 1,931 bytes |
コンパイル時間 | 2,458 ms |
コンパイル使用メモリ | 79,552 KB |
実行使用メモリ | 45,772 KB |
最終ジャッジ日時 | 2024-10-01 19:28:25 |
合計ジャッジ時間 | 6,333 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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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 | 115 ms
40,844 KB |
testcase_01 | AC | 113 ms
41,252 KB |
testcase_02 | AC | 115 ms
41,580 KB |
testcase_03 | AC | 114 ms
41,036 KB |
testcase_04 | AC | 106 ms
40,672 KB |
testcase_05 | AC | 172 ms
45,032 KB |
testcase_06 | AC | 114 ms
41,104 KB |
testcase_07 | AC | 181 ms
45,556 KB |
testcase_08 | AC | 122 ms
41,172 KB |
testcase_09 | AC | 126 ms
41,560 KB |
testcase_10 | AC | 180 ms
45,400 KB |
testcase_11 | AC | 106 ms
40,076 KB |
testcase_12 | AC | 115 ms
41,156 KB |
testcase_13 | AC | 104 ms
40,384 KB |
testcase_14 | AC | 119 ms
41,308 KB |
testcase_15 | AC | 111 ms
40,236 KB |
testcase_16 | AC | 109 ms
40,260 KB |
testcase_17 | AC | 114 ms
41,028 KB |
testcase_18 | AC | 170 ms
45,772 KB |
testcase_19 | AC | 174 ms
44,580 KB |
testcase_20 | AC | 171 ms
45,328 KB |
testcase_21 | AC | 180 ms
44,832 KB |
testcase_22 | AC | 184 ms
45,136 KB |
ソースコード
import java.util.ArrayList; import java.util.Collections; import java.util.HashSet; import java.util.List; import java.util.Scanner; import java.util.Set; public class Main { public static void main(String[] args) { new Main().execute(); } private void execute() { int[] weights = loadInputValue(); outputResult(canDevideInHalf(weights)); } boolean canDevideInHalf(int[] weights) { int totalWeight = total(weights); if (totalWeight % 2 != 0) { return false; } int goalWeight = totalWeight / 2; int remainingWeight = totalWeight; List<Integer> sortedWeights = convertToSortedList(weights); Set<Integer> availavleWeights = new HashSet<>(); availavleWeights.add(0); for (Integer weight : sortedWeights) { remainingWeight -= weight; Set<Integer> additionalWeights = new HashSet<>(availavleWeights); for (Integer availavleWeight : availavleWeights) { int e = availavleWeight + weight; if (e == goalWeight) { return true; } else if (e > goalWeight) { continue; } else if (e + remainingWeight < goalWeight) { continue; } additionalWeights.add(e); } availavleWeights = additionalWeights; } return false; } private List<Integer> convertToSortedList(int[] array) { List<Integer> ret = new ArrayList<>(); for (int i : array) { ret.add(i); } Collections.sort(ret); return ret ; } private int total(int[] values) { int totalValue = 0; for (int value : values) { totalValue += value; } return totalValue; } @SuppressWarnings("resource") private int[] loadInputValue() { Scanner sc = new Scanner(System.in); int[] ret = new int[sc.nextInt()]; for (int i = 0; i < ret.length; i++) { ret[i] = sc.nextInt(); } return ret; } private void outputResult(boolean canDevideInHalf) { if (canDevideInHalf) { System.out.println("possible"); } else { System.out.println("impossible"); } } }