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답안 #153769

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
153769 2019-09-15T20:43:16 Z tutis Cats or Dogs (JOI18_catdog) C++17
100 / 100
 1574 ms 26592 KB 
#import<bits/stdc++.h>
using namespace std;
const int N=101010;
vector<int>adj[N];
int pa[N];
int dfs(int i,int p)
{
pa[i]=p;
int sz=1;
pair<int,int>mx={0,0};
for(int t=0;t<(int)adj[i].size();t++)
{
int j=adj[i][t];
if(j==p)
continue;
int x=dfs(j,i);
sz+=x;
mx=max(mx,{x,t});
}
swap(adj[i][0],adj[i][mx.second]);
return sz;
}
int timer=1;
int nr[N],head[N],tail[N];
void hld(int i,int p,int h)
{
nr[i]=timer++;
head[i]=h;
tail[h]=i;
int t=0;
for(int j:adj[i])
{
if(j!=p)
hld(j,i,t++==0?h:j);
}
}
struct line
{
int cc=0,cd=N,dd=0,dc=N;
int mn(int c)
{
if(c)
return min({cd,cc,dc+1,dd+1});
else
return min({cd+1,cc+1,dc,dd});
}
};
line merge(line a,line b)
{
line c;
c.cc=min({a.cc+b.cc,a.cc+b.dc+1,a.cd+b.cc+1,a.cd+b.dc});
c.cd=min({a.cc+b.cd,a.cc+b.dd+1,a.cd+b.cd+1,a.cd+b.dd});
c.dd=min({a.dc+b.cd,a.dc+b.dd+1,a.dd+b.cd+1,a.dd+b.dd});
c.dc=min({a.dc+b.cc,a.dc+b.dc+1,a.dd+b.cc+1,a.dd+b.dc});
return c;
}
struct ST
{
line X;
int l,r;
ST*left,*right;
ST(int l,int r):l(l),r(r)
{
if(l<r)
{
left=new ST(l,(l+r)/2);
right=new ST((l+r)/2+1,r);
X=merge(left->X,right->X);
}
}
line get(int x,int y)
{
if(x<=l&&r<=y)
return X;
if(r<x||y<l)
return line();
return merge(left->get(x,y),right->get(x,y));
}
void set(int x,int w,int c)
{
if(l==r)
{
if(c)
X.cc=w;
else
X.dd=w;
}
else
{
if(x<=(l+r)/2)
left->set(x,w,c);
else
right->set(x,w,c);
X=merge(left->X,right->X);
}
}
}medis(0,N);
void initialize(int N,vector<int>A,vector<int>B)
{
for(int i=0;i<N-1;i++)
{
adj[A[i]].push_back(B[i]);
adj[B[i]].push_back(A[i]);
}
dfs(1,0);
hld(1,0,1);
}
int C[N],D[N],V[N];
int fix(int v,int p)
{
V[v]=p;
while(true)
{
int w=head[v];
line X=medis.get(nr[w],nr[tail[w]]);
C[pa[w]]-=X.mn(1);
D[pa[w]]-=X.mn(0);
medis.set(nr[v],V[v]==1?N:C[v],1);
medis.set(nr[v],V[v]==2?N:D[v],0);
X=medis.get(nr[w],nr[tail[w]]);
C[pa[w]]+=X.mn(1);
D[pa[w]]+=X.mn(0);
if(v==1)break;
if(v!=w)
v=w;
else
v=pa[v];
}
return min(C[0],D[0]);
}
int cat(int v)
{
return fix(v,2);
}
int dog(int v)
{
return fix(v,1);
}
int neighbor(int v)
{
return fix(v,0);
}

Compilation message

catdog.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated]
 #import<bits/stdc++.h>
  ^~~~~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 12280 KB Output is correct
2 Correct 18 ms 12280 KB Output is correct
3 Correct 19 ms 12268 KB Output is correct
4 Correct 18 ms 12152 KB Output is correct
5 Correct 18 ms 12232 KB Output is correct
6 Correct 19 ms 12152 KB Output is correct
7 Correct 18 ms 12252 KB Output is correct
8 Correct 19 ms 12280 KB Output is correct
9 Correct 19 ms 12152 KB Output is correct
10 Correct 19 ms 12152 KB Output is correct
11 Correct 18 ms 12252 KB Output is correct
12 Correct 18 ms 12152 KB Output is correct
13 Correct 18 ms 12252 KB Output is correct
14 Correct 19 ms 12152 KB Output is correct
15 Correct 18 ms 12152 KB Output is correct
16 Correct 19 ms 12152 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 12280 KB Output is correct
2 Correct 18 ms 12280 KB Output is correct
3 Correct 19 ms 12268 KB Output is correct
4 Correct 18 ms 12152 KB Output is correct
5 Correct 18 ms 12232 KB Output is correct
6 Correct 19 ms 12152 KB Output is correct
7 Correct 18 ms 12252 KB Output is correct
8 Correct 19 ms 12280 KB Output is correct
9 Correct 19 ms 12152 KB Output is correct
10 Correct 19 ms 12152 KB Output is correct
11 Correct 18 ms 12252 KB Output is correct
12 Correct 18 ms 12152 KB Output is correct
13 Correct 18 ms 12252 KB Output is correct
14 Correct 19 ms 12152 KB Output is correct
15 Correct 18 ms 12152 KB Output is correct
16 Correct 19 ms 12152 KB Output is correct
17 Correct 23 ms 12280 KB Output is correct
18 Correct 24 ms 12252 KB Output is correct
19 Correct 21 ms 12280 KB Output is correct
20 Correct 18 ms 12280 KB Output is correct
21 Correct 21 ms 12280 KB Output is correct
22 Correct 21 ms 12280 KB Output is correct
23 Correct 25 ms 12280 KB Output is correct
24 Correct 24 ms 12324 KB Output is correct
25 Correct 23 ms 12244 KB Output is correct
26 Correct 20 ms 12216 KB Output is correct
27 Correct 19 ms 12280 KB Output is correct
28 Correct 19 ms 12332 KB Output is correct
29 Correct 22 ms 12372 KB Output is correct
30 Correct 21 ms 12280 KB Output is correct
31 Correct 19 ms 12280 KB Output is correct
32 Correct 21 ms 12280 KB Output is correct

Subtask #3
62.0 / 62.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 12280 KB Output is correct
2 Correct 18 ms 12280 KB Output is correct
3 Correct 19 ms 12268 KB Output is correct
4 Correct 18 ms 12152 KB Output is correct
5 Correct 18 ms 12232 KB Output is correct
6 Correct 19 ms 12152 KB Output is correct
7 Correct 18 ms 12252 KB Output is correct
8 Correct 19 ms 12280 KB Output is correct
9 Correct 19 ms 12152 KB Output is correct
10 Correct 19 ms 12152 KB Output is correct
11 Correct 18 ms 12252 KB Output is correct
12 Correct 18 ms 12152 KB Output is correct
13 Correct 18 ms 12252 KB Output is correct
14 Correct 19 ms 12152 KB Output is correct
15 Correct 18 ms 12152 KB Output is correct
16 Correct 19 ms 12152 KB Output is correct
17 Correct 23 ms 12280 KB Output is correct
18 Correct 24 ms 12252 KB Output is correct
19 Correct 21 ms 12280 KB Output is correct
20 Correct 18 ms 12280 KB Output is correct
21 Correct 21 ms 12280 KB Output is correct
22 Correct 21 ms 12280 KB Output is correct
23 Correct 25 ms 12280 KB Output is correct
24 Correct 24 ms 12324 KB Output is correct
25 Correct 23 ms 12244 KB Output is correct
26 Correct 20 ms 12216 KB Output is correct
27 Correct 19 ms 12280 KB Output is correct
28 Correct 19 ms 12332 KB Output is correct
29 Correct 22 ms 12372 KB Output is correct
30 Correct 21 ms 12280 KB Output is correct
31 Correct 19 ms 12280 KB Output is correct
32 Correct 21 ms 12280 KB Output is correct
33 Correct 1044 ms 17876 KB Output is correct
34 Correct 294 ms 17756 KB Output is correct
35 Correct 964 ms 16740 KB Output is correct
36 Correct 1513 ms 21320 KB Output is correct
37 Correct 40 ms 14840 KB Output is correct
38 Correct 1574 ms 22336 KB Output is correct
39 Correct 1535 ms 22208 KB Output is correct
40 Correct 1533 ms 22208 KB Output is correct
41 Correct 1542 ms 22216 KB Output is correct
42 Correct 1420 ms 22220 KB Output is correct
43 Correct 1469 ms 22252 KB Output is correct
44 Correct 1436 ms 21712 KB Output is correct
45 Correct 1425 ms 21720 KB Output is correct
46 Correct 1486 ms 21720 KB Output is correct
47 Correct 1507 ms 21572 KB Output is correct
48 Correct 355 ms 18180 KB Output is correct
49 Correct 368 ms 19616 KB Output is correct
50 Correct 165 ms 14304 KB Output is correct
51 Correct 165 ms 15452 KB Output is correct
52 Correct 77 ms 14072 KB Output is correct
53 Correct 584 ms 19916 KB Output is correct
54 Correct 492 ms 15844 KB Output is correct
55 Correct 1292 ms 18424 KB Output is correct
56 Correct 863 ms 16372 KB Output is correct
57 Correct 1024 ms 19472 KB Output is correct
58 Correct 65 ms 15192 KB Output is correct
59 Correct 167 ms 15052 KB Output is correct
60 Correct 342 ms 18488 KB Output is correct
61 Correct 365 ms 18660 KB Output is correct
62 Correct 208 ms 17136 KB Output is correct
63 Correct 122 ms 18096 KB Output is correct
64 Correct 123 ms 19648 KB Output is correct
65 Correct 138 ms 23672 KB Output is correct
66 Correct 236 ms 15104 KB Output is correct
67 Correct 173 ms 20216 KB Output is correct
68 Correct 353 ms 23544 KB Output is correct
69 Correct 131 ms 13532 KB Output is correct
70 Correct 46 ms 12480 KB Output is correct
71 Correct 190 ms 17784 KB Output is correct
72 Correct 243 ms 22420 KB Output is correct
73 Correct 520 ms 26592 KB Output is correct
74 Correct 554 ms 23032 KB Output is correct
75 Correct 418 ms 26560 KB Output is correct
76 Correct 425 ms 25308 KB Output is correct
77 Correct 552 ms 23476 KB Output is correct