結果
問題 | No.4 おもりと天秤 |
ユーザー | maruyuki95 |
提出日時 | 2020-07-07 22:40:48 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 200 ms / 5,000 ms |
コード長 | 1,696 bytes |
コンパイル時間 | 2,331 ms |
コンパイル使用メモリ | 79,452 KB |
実行使用メモリ | 52,960 KB |
最終ジャッジ日時 | 2024-10-01 21:44:52 |
合計ジャッジ時間 | 6,731 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 126 ms
50,012 KB |
testcase_01 | AC | 133 ms
50,092 KB |
testcase_02 | AC | 139 ms
50,248 KB |
testcase_03 | AC | 134 ms
49,604 KB |
testcase_04 | AC | 129 ms
50,096 KB |
testcase_05 | AC | 197 ms
52,960 KB |
testcase_06 | AC | 127 ms
50,244 KB |
testcase_07 | AC | 200 ms
52,784 KB |
testcase_08 | AC | 136 ms
50,108 KB |
testcase_09 | AC | 137 ms
49,964 KB |
testcase_10 | AC | 185 ms
52,804 KB |
testcase_11 | AC | 113 ms
49,852 KB |
testcase_12 | AC | 131 ms
50,064 KB |
testcase_13 | AC | 129 ms
49,988 KB |
testcase_14 | AC | 126 ms
49,940 KB |
testcase_15 | AC | 127 ms
49,908 KB |
testcase_16 | AC | 128 ms
50,092 KB |
testcase_17 | AC | 126 ms
41,460 KB |
testcase_18 | AC | 195 ms
45,492 KB |
testcase_19 | AC | 199 ms
45,272 KB |
testcase_20 | AC | 194 ms
45,304 KB |
testcase_21 | AC | 185 ms
45,680 KB |
testcase_22 | AC | 187 ms
45,372 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; return canMakeWeight(weights, goalWeight); } private boolean canMakeWeight(int[] weights, int goalWeight) { Set<Integer> makableWeights = new HashSet<>(); makableWeights.add(0); for (Integer weight : weights) { Set<Integer> additionalWeights = new HashSet<>(makableWeights); for (Integer makableWeight : makableWeights) { int additionalWeight = makableWeight + weight; if (additionalWeight == goalWeight) { return true; } else if (additionalWeight > goalWeight) { continue; } additionalWeights.add(additionalWeight); } makableWeights = additionalWeights; } return false; } 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"); } } }