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Submission #315761

# Submission time Handle Problem Language Result Execution time Memory
315761 2020-10-23T21:25:18 Z KWang31 Graph (BOI20_graph) Java 11
34 / 100
 700 ms 57920 KB 
import java.io.*; import java.util.*;
public class Graph {
    
    public static void main(String[] args) throws IOException {
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st=new StringTokenizer(br.readLine());
        int N=Integer.parseInt(st.nextToken());
        int M=Integer.parseInt(st.nextToken());
        ArrayList<Integer> arl[]=new ArrayList[N];
        for (int i = 0; i < N; i++) {
            arl[i]=new ArrayList<>();
        }
        int a,b,vv;
        for (int i = 0; i < M; i++) {
            st=new StringTokenizer(br.readLine());
            a=Integer.parseInt(st.nextToken())-1;
            b=Integer.parseInt(st.nextToken())-1;
            vv=Integer.parseInt(st.nextToken());
            arl[a].add(4*b+2*vv); arl[b].add(4*a+2*vv);
        }
        
        boolean[] vis=new boolean[N];
        
        int[] m=new int[N];
        int[] c=new int[N];
        int done=0; int pt=0;
        while(done<N){
            while(pt<N && vis[pt]){
                pt++;
            }
            
            //Start DFS at pt, finish the component
            m[pt]=1; //b[pt]=0
            Queue<Integer> qu=new LinkedList<>();
            qu.add(pt); vis[pt]=true; done++;
            ArrayList<Integer> qu2=new ArrayList<>();//Tracks all vertices in the queue
            qu2.add(pt); boolean fix=false;
            int x,y;
            while(!qu.isEmpty()){
                int v=qu.poll(); 
                for (int p : arl[v]) {
                    x=4-p%4; y=(p-x)/4;
                    if(!vis[y]){
                        vis[y]=true; qu.add(y); 
                        if(!fix){
                            qu2.add(y);
                        }
                        m[y]=-m[v]; c[y]=x-c[v]; done++;
                    }else{
                        //System.out.println(x+" "+y+" "+v);
                        if(m[y]==m[v] && m[v]!=0){
                            //m[p.vtx]x+c[p.vtx]+m[v]x+c[v] is known
                            int xx=(x-c[y]-c[v])/(2*m[y]); fix=true;
                            
                            for(int vtx: qu2){
                                
                                c[vtx]+=m[vtx]*xx; m[vtx]=0;
                            }
                        }else if(m[y]+m[v]==0){//m[v]=0
                            if(c[y]+c[v]!=x){
                                System.out.println("NO"); return;
                            }
                        }
                    }
                }
                //System.out.println(Arrays.toString(m));
                //System.out.println(Arrays.toString(c));
            }
            
            if(m[pt]!=0){//This component is not fixed
                ArrayList<Integer> arl2=new ArrayList<>();
                
                for (int i : qu2) {
                    if(m[i]<0){
                        m[i]=-m[i]; c[i]=-c[i]; qu.add(i);
                    }
                    arl2.add(c[i]);
                }
                
                Collections.sort(arl2);
                int med=arl2.get(arl2.size()/2);
                for (int i : qu2) {
                    c[i]-=med;
                    
                }
                while(!qu.isEmpty()){
                    int i=qu.poll();
                    c[i]=-c[i];
                }
            }
            
        }
        System.out.println("YES");
        StringBuilder sb=new StringBuilder();
        for (int i = 0; i < N; i++) {
             sb.append((double)c[i]/2).append(" ");
        }
        System.out.println(sb.toString());
    }
    
}

Compilation message

Note: Graph.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 10360 KB answer = YES
2 Correct 83 ms 10364 KB answer = YES
3 Correct 82 ms 10488 KB answer = YES
4 Correct 85 ms 10420 KB answer = NO
5 Correct 80 ms 10360 KB answer = YES
6 Correct 82 ms 10364 KB answer = YES
7 Correct 82 ms 10220 KB answer = YES
8 Correct 81 ms 10388 KB answer = YES
9 Correct 78 ms 10344 KB answer = NO
10 Correct 81 ms 10344 KB answer = YES
11 Correct 81 ms 10492 KB answer = YES
12 Correct 76 ms 10324 KB answer = NO
13 Correct 80 ms 10436 KB answer = YES
14 Correct 83 ms 10484 KB answer = YES
15 Correct 84 ms 10600 KB answer = YES
16 Correct 81 ms 10360 KB answer = YES
17 Correct 77 ms 10360 KB answer = YES
18 Correct 80 ms 10472 KB answer = YES
19 Correct 84 ms 10728 KB answer = YES
20 Correct 82 ms 10360 KB answer = YES
21 Correct 83 ms 10604 KB answer = YES
22 Correct 76 ms 10360 KB answer = NO
23 Correct 81 ms 10472 KB answer = NO

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 10360 KB answer = YES
2 Correct 83 ms 10364 KB answer = YES
3 Correct 82 ms 10488 KB answer = YES
4 Correct 85 ms 10420 KB answer = NO
5 Correct 80 ms 10360 KB answer = YES
6 Correct 82 ms 10364 KB answer = YES
7 Correct 82 ms 10220 KB answer = YES
8 Correct 81 ms 10388 KB answer = YES
9 Correct 78 ms 10344 KB answer = NO
10 Correct 81 ms 10344 KB answer = YES
11 Correct 81 ms 10492 KB answer = YES
12 Correct 76 ms 10324 KB answer = NO
13 Correct 80 ms 10436 KB answer = YES
14 Correct 83 ms 10484 KB answer = YES
15 Correct 84 ms 10600 KB answer = YES
16 Correct 81 ms 10360 KB answer = YES
17 Correct 77 ms 10360 KB answer = YES
18 Correct 80 ms 10472 KB answer = YES
19 Correct 84 ms 10728 KB answer = YES
20 Correct 82 ms 10360 KB answer = YES
21 Correct 83 ms 10604 KB answer = YES
22 Correct 76 ms 10360 KB answer = NO
23 Correct 81 ms 10472 KB answer = NO
24 Correct 87 ms 10480 KB answer = YES
25 Correct 85 ms 10488 KB answer = YES
26 Correct 87 ms 10488 KB answer = YES
27 Correct 85 ms 10472 KB answer = YES
28 Correct 88 ms 10372 KB answer = YES
29 Correct 89 ms 10488 KB answer = YES
30 Correct 86 ms 10488 KB answer = NO
31 Correct 87 ms 10492 KB answer = YES
32 Correct 88 ms 10488 KB answer = YES
33 Correct 86 ms 10472 KB answer = YES
34 Correct 90 ms 10792 KB answer = YES
35 Correct 85 ms 10600 KB answer = YES
36 Correct 83 ms 10488 KB answer = YES

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 10360 KB answer = YES
2 Correct 83 ms 10364 KB answer = YES
3 Correct 82 ms 10488 KB answer = YES
4 Correct 85 ms 10420 KB answer = NO
5 Correct 80 ms 10360 KB answer = YES
6 Correct 82 ms 10364 KB answer = YES
7 Correct 82 ms 10220 KB answer = YES
8 Correct 81 ms 10388 KB answer = YES
9 Correct 78 ms 10344 KB answer = NO
10 Correct 81 ms 10344 KB answer = YES
11 Correct 81 ms 10492 KB answer = YES
12 Correct 76 ms 10324 KB answer = NO
13 Correct 80 ms 10436 KB answer = YES
14 Correct 83 ms 10484 KB answer = YES
15 Correct 84 ms 10600 KB answer = YES
16 Correct 81 ms 10360 KB answer = YES
17 Correct 77 ms 10360 KB answer = YES
18 Correct 80 ms 10472 KB answer = YES
19 Correct 84 ms 10728 KB answer = YES
20 Correct 82 ms 10360 KB answer = YES
21 Correct 83 ms 10604 KB answer = YES
22 Correct 76 ms 10360 KB answer = NO
23 Correct 81 ms 10472 KB answer = NO
24 Correct 87 ms 10480 KB answer = YES
25 Correct 85 ms 10488 KB answer = YES
26 Correct 87 ms 10488 KB answer = YES
27 Correct 85 ms 10472 KB answer = YES
28 Correct 88 ms 10372 KB answer = YES
29 Correct 89 ms 10488 KB answer = YES
30 Correct 86 ms 10488 KB answer = NO
31 Correct 87 ms 10492 KB answer = YES
32 Correct 88 ms 10488 KB answer = YES
33 Correct 86 ms 10472 KB answer = YES
34 Correct 90 ms 10792 KB answer = YES
35 Correct 85 ms 10600 KB answer = YES
36 Correct 83 ms 10488 KB answer = YES
37 Correct 100 ms 11000 KB answer = YES
38 Correct 95 ms 10984 KB answer = YES
39 Correct 123 ms 11040 KB answer = YES
40 Correct 123 ms 11512 KB answer = YES
41 Correct 104 ms 11128 KB answer = NO
42 Correct 126 ms 11388 KB answer = YES
43 Correct 128 ms 11496 KB answer = YES
44 Correct 136 ms 11636 KB answer = YES
45 Correct 135 ms 12444 KB answer = YES
46 Correct 118 ms 11000 KB answer = YES
47 Correct 131 ms 12296 KB answer = YES
48 Correct 127 ms 12280 KB answer = YES

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 10360 KB answer = YES
2 Correct 83 ms 10364 KB answer = YES
3 Correct 82 ms 10488 KB answer = YES
4 Correct 85 ms 10420 KB answer = NO
5 Correct 80 ms 10360 KB answer = YES
6 Correct 82 ms 10364 KB answer = YES
7 Correct 82 ms 10220 KB answer = YES
8 Correct 81 ms 10388 KB answer = YES
9 Correct 78 ms 10344 KB answer = NO
10 Correct 81 ms 10344 KB answer = YES
11 Correct 81 ms 10492 KB answer = YES
12 Correct 76 ms 10324 KB answer = NO
13 Correct 80 ms 10436 KB answer = YES
14 Correct 83 ms 10484 KB answer = YES
15 Correct 84 ms 10600 KB answer = YES
16 Correct 81 ms 10360 KB answer = YES
17 Correct 77 ms 10360 KB answer = YES
18 Correct 80 ms 10472 KB answer = YES
19 Correct 84 ms 10728 KB answer = YES
20 Correct 82 ms 10360 KB answer = YES
21 Correct 83 ms 10604 KB answer = YES
22 Correct 76 ms 10360 KB answer = NO
23 Correct 81 ms 10472 KB answer = NO
24 Correct 87 ms 10480 KB answer = YES
25 Correct 85 ms 10488 KB answer = YES
26 Correct 87 ms 10488 KB answer = YES
27 Correct 85 ms 10472 KB answer = YES
28 Correct 88 ms 10372 KB answer = YES
29 Correct 89 ms 10488 KB answer = YES
30 Correct 86 ms 10488 KB answer = NO
31 Correct 87 ms 10492 KB answer = YES
32 Correct 88 ms 10488 KB answer = YES
33 Correct 86 ms 10472 KB answer = YES
34 Correct 90 ms 10792 KB answer = YES
35 Correct 85 ms 10600 KB answer = YES
36 Correct 83 ms 10488 KB answer = YES
37 Correct 100 ms 11000 KB answer = YES
38 Correct 95 ms 10984 KB answer = YES
39 Correct 123 ms 11040 KB answer = YES
40 Correct 123 ms 11512 KB answer = YES
41 Correct 104 ms 11128 KB answer = NO
42 Correct 126 ms 11388 KB answer = YES
43 Correct 128 ms 11496 KB answer = YES
44 Correct 136 ms 11636 KB answer = YES
45 Correct 135 ms 12444 KB answer = YES
46 Correct 118 ms 11000 KB answer = YES
47 Correct 131 ms 12296 KB answer = YES
48 Correct 127 ms 12280 KB answer = YES
49 Correct 325 ms 20480 KB answer = YES
50 Correct 330 ms 21268 KB answer = YES
51 Correct 361 ms 22248 KB answer = YES
52 Correct 188 ms 18520 KB answer = NO
53 Correct 137 ms 11240 KB answer = YES
54 Correct 171 ms 14184 KB answer = YES
55 Correct 239 ms 16596 KB answer = YES
56 Correct 349 ms 20044 KB answer = YES
57 Correct 381 ms 21356 KB answer = YES
58 Correct 317 ms 20436 KB answer = YES
59 Correct 297 ms 19928 KB answer = YES
60 Correct 349 ms 21392 KB answer = YES
61 Correct 235 ms 16588 KB answer = YES
62 Correct 568 ms 55748 KB answer = NO
63 Execution timed out 815 ms 57920 KB Time limit exceeded
64 Halted 0 ms 0 KB -

Subtask #5
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 10360 KB answer = YES
2 Correct 83 ms 10364 KB answer = YES
3 Correct 82 ms 10488 KB answer = YES
4 Correct 85 ms 10420 KB answer = NO
5 Correct 80 ms 10360 KB answer = YES
6 Correct 82 ms 10364 KB answer = YES
7 Correct 82 ms 10220 KB answer = YES
8 Correct 81 ms 10388 KB answer = YES
9 Correct 78 ms 10344 KB answer = NO
10 Correct 81 ms 10344 KB answer = YES
11 Correct 81 ms 10492 KB answer = YES
12 Correct 76 ms 10324 KB answer = NO
13 Correct 80 ms 10436 KB answer = YES
14 Correct 83 ms 10484 KB answer = YES
15 Correct 84 ms 10600 KB answer = YES
16 Correct 81 ms 10360 KB answer = YES
17 Correct 77 ms 10360 KB answer = YES
18 Correct 80 ms 10472 KB answer = YES
19 Correct 84 ms 10728 KB answer = YES
20 Correct 82 ms 10360 KB answer = YES
21 Correct 83 ms 10604 KB answer = YES
22 Correct 76 ms 10360 KB answer = NO
23 Correct 81 ms 10472 KB answer = NO
24 Correct 87 ms 10480 KB answer = YES
25 Correct 85 ms 10488 KB answer = YES
26 Correct 87 ms 10488 KB answer = YES
27 Correct 85 ms 10472 KB answer = YES
28 Correct 88 ms 10372 KB answer = YES
29 Correct 89 ms 10488 KB answer = YES
30 Correct 86 ms 10488 KB answer = NO
31 Correct 87 ms 10492 KB answer = YES
32 Correct 88 ms 10488 KB answer = YES
33 Correct 86 ms 10472 KB answer = YES
34 Correct 90 ms 10792 KB answer = YES
35 Correct 85 ms 10600 KB answer = YES
36 Correct 83 ms 10488 KB answer = YES
37 Correct 100 ms 11000 KB answer = YES
38 Correct 95 ms 10984 KB answer = YES
39 Correct 123 ms 11040 KB answer = YES
40 Correct 123 ms 11512 KB answer = YES
41 Correct 104 ms 11128 KB answer = NO
42 Correct 126 ms 11388 KB answer = YES
43 Correct 128 ms 11496 KB answer = YES
44 Correct 136 ms 11636 KB answer = YES
45 Correct 135 ms 12444 KB answer = YES
46 Correct 118 ms 11000 KB answer = YES
47 Correct 131 ms 12296 KB answer = YES
48 Correct 127 ms 12280 KB answer = YES
49 Correct 325 ms 20480 KB answer = YES
50 Correct 330 ms 21268 KB answer = YES
51 Correct 361 ms 22248 KB answer = YES
52 Correct 188 ms 18520 KB answer = NO
53 Correct 137 ms 11240 KB answer = YES
54 Correct 171 ms 14184 KB answer = YES
55 Correct 239 ms 16596 KB answer = YES
56 Correct 349 ms 20044 KB answer = YES
57 Correct 381 ms 21356 KB answer = YES
58 Correct 317 ms 20436 KB answer = YES
59 Correct 297 ms 19928 KB answer = YES
60 Correct 349 ms 21392 KB answer = YES
61 Correct 235 ms 16588 KB answer = YES
62 Correct 568 ms 55748 KB answer = NO
63 Execution timed out 815 ms 57920 KB Time limit exceeded
64 Halted 0 ms 0 KB -