Submission #1510731
Source Code Expand
import java.util.*; /** * http://abc002.contest.atcoder.jp/tasks/abc002_4 */ public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int N = sc.nextInt(); int M = sc.nextInt(); boolean graph[][] = new boolean[N][N]; for(int i=0; i<M; i++){ int n1 = sc.nextInt(); int n2 = sc.nextInt(); graph[n1-1][n2-1] = true; graph[n2-1][n1-1] = true; } sc.close(); System.out.println(maxClusterDfs(graph)); } public static int maxCluster(boolean[][] graph){ int nodeSize = graph.length; int result = 0; for(int bmask=1; bmask < (1<<nodeSize); ++bmask){ List<Integer> candidate = new ArrayList<>(); int tmp = bmask; int shift=0; while(tmp != 0){ if((tmp&1)!=0)candidate.add(shift); tmp>>=1; ++shift; } if(isFullyConnected(graph, candidate))result=Math.max(result,candidate.size()); } return result; } public static boolean isFullyConnected(boolean[][] graph, List<Integer> nodeList){ for(int i=0; i < nodeList.size(); ++i){ for(int j=i+1; j < nodeList.size(); ++j){ if(!graph[nodeList.get(i)][nodeList.get(j)])return false; } } return true; } public static Map<Integer, Integer> memoization = new HashMap<Integer,Integer>(); public static int maxClusterDfs(boolean[][] graph){ int nodeSize = graph.length; boolean[] visited = new boolean[nodeSize]; int result = 0; for(int start = 0; start < nodeSize; ++start){ visited[start] = true; result = Math.max(1 + dfs(graph, start, visited), result); visited[start] = false; } return result; } public static boolean isFullyConnected(boolean[][] graph, boolean[] visited, int newNode){ for(int i = 0; i < graph.length; ++i){ if(visited[i] && !graph[i][newNode]) return false; } return true; } public static int dfs(boolean[][] graph, int currentNode, boolean[] visited){ int memoizationKey = (1 << currentNode) << graph.length; for(int i = 0; i < graph.length; ++i) if(visited[i]) memoizationKey |= (1 << i); if(memoization.containsKey(memoizationKey)) return memoization.get(memoizationKey); int result = 0; for(int nextNode = 0; nextNode < graph.length; ++nextNode){ if(!graph[currentNode][nextNode])continue; if(visited[nextNode])continue; if(isFullyConnected(graph, visited, nextNode)){ visited[nextNode] = true; result = Math.max(result, 1 + dfs(graph, nextNode, visited)); visited[nextNode] = false; } } memoization.put(memoizationKey, result); return result; } }
Submission Info
Submission Time | |
---|---|
Task | D - 派閥 |
User | hi_viv |
Language | Java8 (OpenJDK 1.8.0) |
Score | 100 |
Code Size | 2631 Byte |
Status | AC |
Exec Time | 209 ms |
Memory | 32848 KB |
Judge Result
Set Name | all | ||
---|---|---|---|
Score / Max Score | 100 / 100 | ||
Status |
|
Set Name | Test Cases |
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all | 00_sample_01.txt, 00_sample_02.txt, 00_sample_03.txt, 00_sample_04.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt, test_31.txt, test_32.txt, test_33.txt, test_34.txt, test_35.txt, test_36.txt, test_37.txt, test_38.txt, test_39.txt, test_40.txt, test_41.txt, test_42.txt, test_43.txt, test_44.txt, test_45.txt, test_46.txt, test_47.txt, test_48.txt, test_49.txt, test_50.txt, test_51.txt, test_52.txt, test_53.txt, test_54.txt, test_55.txt, test_56.txt, test_57.txt, test_58.txt, test_59.txt, test_60.txt, test_61.txt, test_62.txt, test_63.txt, test_64.txt, test_65.txt, test_66.txt, test_67.txt, test_68.txt, test_69.txt, test_70.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
00_sample_01.txt | AC | 93 ms | 21712 KB |
00_sample_02.txt | AC | 91 ms | 19796 KB |
00_sample_03.txt | AC | 93 ms | 22100 KB |
00_sample_04.txt | AC | 89 ms | 19924 KB |
test_01.txt | AC | 90 ms | 21844 KB |
test_02.txt | AC | 107 ms | 20560 KB |
test_03.txt | AC | 92 ms | 21844 KB |
test_04.txt | AC | 92 ms | 18644 KB |
test_05.txt | AC | 102 ms | 18644 KB |
test_06.txt | AC | 104 ms | 19668 KB |
test_07.txt | AC | 94 ms | 19924 KB |
test_08.txt | AC | 120 ms | 21972 KB |
test_09.txt | AC | 118 ms | 23124 KB |
test_10.txt | AC | 95 ms | 19540 KB |
test_11.txt | AC | 92 ms | 21844 KB |
test_12.txt | AC | 113 ms | 20692 KB |
test_13.txt | AC | 92 ms | 18900 KB |
test_14.txt | AC | 91 ms | 21844 KB |
test_15.txt | AC | 96 ms | 18900 KB |
test_16.txt | AC | 119 ms | 21968 KB |
test_17.txt | AC | 131 ms | 23064 KB |
test_18.txt | AC | 107 ms | 18772 KB |
test_19.txt | AC | 138 ms | 25572 KB |
test_20.txt | AC | 160 ms | 26772 KB |
test_21.txt | AC | 117 ms | 22868 KB |
test_22.txt | AC | 154 ms | 23944 KB |
test_23.txt | AC | 153 ms | 26632 KB |
test_24.txt | AC | 186 ms | 30984 KB |
test_25.txt | AC | 93 ms | 19668 KB |
test_26.txt | AC | 102 ms | 20180 KB |
test_27.txt | AC | 101 ms | 19924 KB |
test_28.txt | AC | 93 ms | 21844 KB |
test_29.txt | AC | 98 ms | 20180 KB |
test_30.txt | AC | 113 ms | 19028 KB |
test_31.txt | AC | 126 ms | 23272 KB |
test_32.txt | AC | 127 ms | 21076 KB |
test_33.txt | AC | 151 ms | 24880 KB |
test_34.txt | AC | 126 ms | 23124 KB |
test_35.txt | AC | 167 ms | 23720 KB |
test_36.txt | AC | 209 ms | 31800 KB |
test_37.txt | AC | 93 ms | 23892 KB |
test_38.txt | AC | 179 ms | 26880 KB |
test_39.txt | AC | 124 ms | 21476 KB |
test_40.txt | AC | 96 ms | 19924 KB |
test_41.txt | AC | 183 ms | 30068 KB |
test_42.txt | AC | 182 ms | 29336 KB |
test_43.txt | AC | 113 ms | 22996 KB |
test_44.txt | AC | 131 ms | 21096 KB |
test_45.txt | AC | 125 ms | 20304 KB |
test_46.txt | AC | 143 ms | 24072 KB |
test_47.txt | AC | 155 ms | 26292 KB |
test_48.txt | AC | 206 ms | 32848 KB |
test_49.txt | AC | 109 ms | 20052 KB |
test_50.txt | AC | 119 ms | 21588 KB |
test_51.txt | AC | 117 ms | 20308 KB |
test_52.txt | AC | 111 ms | 20052 KB |
test_53.txt | AC | 118 ms | 21096 KB |
test_54.txt | AC | 120 ms | 21964 KB |
test_55.txt | AC | 127 ms | 21476 KB |
test_56.txt | AC | 114 ms | 21204 KB |
test_57.txt | AC | 134 ms | 24132 KB |
test_58.txt | AC | 135 ms | 22040 KB |
test_59.txt | AC | 157 ms | 26772 KB |
test_60.txt | AC | 190 ms | 32332 KB |
test_61.txt | AC | 170 ms | 29132 KB |
test_62.txt | AC | 103 ms | 20560 KB |
test_63.txt | AC | 116 ms | 21588 KB |
test_64.txt | AC | 117 ms | 19796 KB |
test_65.txt | AC | 117 ms | 21596 KB |
test_66.txt | AC | 112 ms | 19796 KB |
test_67.txt | AC | 109 ms | 21844 KB |
test_68.txt | AC | 107 ms | 21972 KB |
test_69.txt | AC | 97 ms | 23892 KB |
test_70.txt | AC | 116 ms | 21456 KB |