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Submission #974404

# Submission time Handle Problem Language Result Execution time Memory
974404 2024-05-03T09:48:59 Z sleepntsheep Village (BOI20_village) C
50 / 100
 42 ms 11860 KB 
#include<stdio.h>

#define N 100000
#define M (2*N)

int n, p1[N],head[N], nxt[M], vv[M], eo = 1, tin[N], timer, aux[N],sz[N],qu[N],qh,qt,deg[N];
void link(int u,int v)
{
    int i = eo++;
    nxt[i]=head[u],vv[i]=v,head[u]=i;
    ++deg[v];
}

long long max, min;
void dfs(int u,int p)
{
    sz[u]=1;
    aux[tin[u] = timer++] = u;
    for (int j =head[u];j;j=nxt[j])if(p!=vv[j]){
        dfs(vv[j],u);
        max+=sz[vv[j]]<(n-sz[vv[j]])?sz[vv[j]]:n-sz[vv[j]];
        sz[u]+=sz[vv[j]];
    }
}

int main()
{
    scanf("%d",&n);
    for(int i=1,u,v;i<n;++i)scanf("%d%d",&u,&v),link(--u,--v),link(v,u);
    dfs(0,0);
    for(int i=0;i<n;++i)p1[i]=i;

    for(int i=0;i<n;++i)if(deg[i]==1)qu[qh++]=i;
    while(qh-qt)
    {
        int temp,u=qu[qt++],f=0;
        for(int j=head[u];j;j=nxt[j])
        {
            int v=vv[j];
            if(--deg[v]==1&&p1[v]==v){
                qu[qh++]=v;
                min+=2;
                f=1;
                temp=p1[u],p1[u]=p1[v],p1[v]=temp;
                break;
            }
        }
        if(!f)
        {
            int v=vv[head[u]];
            temp=p1[u],p1[u]=p1[v],p1[v]=temp;
            min+=2;
        }
    }

    printf("%lld %lld\n",min,max<<1);
    for(int i=0;i<n;++i)
        printf("%d ",1+p1[i]);
    putchar(10);
    for(int i=0;i<n;++i)
        printf("%d ",1+aux[(tin[i]+n/2)%n]);
}

Compilation message

Village.c: In function 'main':
Village.c:28:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |     scanf("%d",&n);
      |     ^~~~~~~~~~~~~~
Village.c:29:29: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     for(int i=1,u,v;i<n;++i)scanf("%d%d",&u,&v),link(--u,--v),link(v,u);
      |                             ^~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 2392 KB Partially correct
2 Partially correct 0 ms 2396 KB Partially correct
3 Partially correct 0 ms 2396 KB Partially correct
4 Partially correct 0 ms 2460 KB Partially correct
5 Partially correct 1 ms 2396 KB Partially correct
6 Partially correct 1 ms 2396 KB Partially correct
7 Correct 1 ms 2392 KB Output is correct
8 Partially correct 0 ms 2392 KB Partially correct
9 Correct 1 ms 2396 KB Output is correct
10 Partially correct 0 ms 2396 KB Partially correct
11 Partially correct 0 ms 2396 KB Partially correct
12 Partially correct 1 ms 2396 KB Partially correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 0 ms 2392 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Partially correct 1 ms 2396 KB Partially correct

Subtask #2
19.0 / 38.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 2396 KB Partially correct
2 Partially correct 1 ms 2396 KB Partially correct
3 Partially correct 1 ms 2392 KB Partially correct
4 Partially correct 1 ms 2396 KB Partially correct
5 Partially correct 1 ms 2396 KB Partially correct
6 Partially correct 1 ms 2396 KB Partially correct
7 Partially correct 1 ms 2396 KB Partially correct
8 Partially correct 1 ms 2396 KB Partially correct
9 Partially correct 1 ms 2396 KB Partially correct
10 Correct 1 ms 2396 KB Output is correct
11 Partially correct 1 ms 2396 KB Partially correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Partially correct 1 ms 2396 KB Partially correct
17 Partially correct 1 ms 2396 KB Partially correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Partially correct 1 ms 2396 KB Partially correct
21 Partially correct 1 ms 2392 KB Partially correct
22 Correct 1 ms 2396 KB Output is correct
23 Partially correct 1 ms 2396 KB Partially correct
24 Partially correct 1 ms 2396 KB Partially correct
25 Partially correct 1 ms 2396 KB Partially correct
26 Partially correct 1 ms 2396 KB Partially correct
27 Partially correct 1 ms 2396 KB Partially correct
28 Partially correct 1 ms 2396 KB Partially correct
29 Partially correct 1 ms 2392 KB Partially correct
30 Correct 1 ms 2392 KB Output is correct

Subtask #3
25.0 / 50.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 2392 KB Partially correct
2 Partially correct 0 ms 2396 KB Partially correct
3 Partially correct 0 ms 2396 KB Partially correct
4 Partially correct 0 ms 2460 KB Partially correct
5 Partially correct 1 ms 2396 KB Partially correct
6 Partially correct 1 ms 2396 KB Partially correct
7 Correct 1 ms 2392 KB Output is correct
8 Partially correct 0 ms 2392 KB Partially correct
9 Correct 1 ms 2396 KB Output is correct
10 Partially correct 0 ms 2396 KB Partially correct
11 Partially correct 0 ms 2396 KB Partially correct
12 Partially correct 1 ms 2396 KB Partially correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 0 ms 2392 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Partially correct 1 ms 2396 KB Partially correct
18 Partially correct 1 ms 2396 KB Partially correct
19 Partially correct 1 ms 2396 KB Partially correct
20 Partially correct 1 ms 2392 KB Partially correct
21 Partially correct 1 ms 2396 KB Partially correct
22 Partially correct 1 ms 2396 KB Partially correct
23 Partially correct 1 ms 2396 KB Partially correct
24 Partially correct 1 ms 2396 KB Partially correct
25 Partially correct 1 ms 2396 KB Partially correct
26 Partially correct 1 ms 2396 KB Partially correct
27 Correct 1 ms 2396 KB Output is correct
28 Partially correct 1 ms 2396 KB Partially correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Partially correct 1 ms 2396 KB Partially correct
34 Partially correct 1 ms 2396 KB Partially correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Partially correct 1 ms 2396 KB Partially correct
38 Partially correct 1 ms 2392 KB Partially correct
39 Correct 1 ms 2396 KB Output is correct
40 Partially correct 1 ms 2396 KB Partially correct
41 Partially correct 1 ms 2396 KB Partially correct
42 Partially correct 1 ms 2396 KB Partially correct
43 Partially correct 1 ms 2396 KB Partially correct
44 Partially correct 1 ms 2396 KB Partially correct
45 Partially correct 1 ms 2396 KB Partially correct
46 Partially correct 1 ms 2392 KB Partially correct
47 Correct 1 ms 2392 KB Output is correct
48 Partially correct 29 ms 5308 KB Partially correct
49 Partially correct 32 ms 5724 KB Partially correct
50 Partially correct 32 ms 5716 KB Partially correct
51 Partially correct 25 ms 4944 KB Partially correct
52 Partially correct 31 ms 5712 KB Partially correct
53 Partially correct 29 ms 5200 KB Partially correct
54 Partially correct 18 ms 6744 KB Partially correct
55 Partially correct 42 ms 11860 KB Partially correct
56 Partially correct 40 ms 8492 KB Partially correct
57 Partially correct 40 ms 7536 KB Partially correct
58 Partially correct 33 ms 6736 KB Partially correct
59 Partially correct 31 ms 5720 KB Partially correct
60 Correct 29 ms 5720 KB Output is correct
61 Correct 28 ms 5756 KB Output is correct
62 Correct 30 ms 5712 KB Output is correct
63 Correct 27 ms 5468 KB Output is correct
64 Partially correct 30 ms 5808 KB Partially correct
65 Partially correct 29 ms 5716 KB Partially correct
66 Correct 28 ms 5612 KB Output is correct
67 Correct 26 ms 4956 KB Output is correct
68 Partially correct 25 ms 5212 KB Partially correct
69 Partially correct 30 ms 5724 KB Partially correct
70 Correct 27 ms 5456 KB Output is correct
71 Correct 26 ms 4700 KB Output is correct
72 Correct 23 ms 4876 KB Output is correct
73 Correct 30 ms 5720 KB Output is correct
74 Partially correct 27 ms 5468 KB Partially correct
75 Partially correct 31 ms 5460 KB Partially correct
76 Partially correct 30 ms 5708 KB Partially correct
77 Partially correct 28 ms 5460 KB Partially correct
78 Partially correct 20 ms 4440 KB Partially correct
79 Partially correct 23 ms 4944 KB Partially correct
80 Partially correct 32 ms 5692 KB Partially correct
81 Partially correct 28 ms 5504 KB Partially correct
82 Partially correct 29 ms 5712 KB Partially correct