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답안 #153767

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
153767 2019-09-15T20:41:51 Z tutis Cats or Dogs (JOI18_catdog) C++17
100 / 100
 1642 ms 27256 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;
for(int t=0;t<adj[i].size();t++)
{
int j=adj[i][t];
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>
  ^~~~~~
catdog.cpp: In function 'void hld(int, int, int)':
catdog.cpp:30:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(int t=0;t<adj[i].size();t++)
             ~^~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 12280 KB Output is correct
2 Correct 18 ms 12280 KB Output is correct
3 Correct 24 ms 12280 KB Output is correct
4 Correct 18 ms 12152 KB Output is correct
5 Correct 18 ms 12152 KB Output is correct
6 Correct 21 ms 12280 KB Output is correct
7 Correct 21 ms 12280 KB Output is correct
8 Correct 21 ms 12252 KB Output is correct
9 Correct 22 ms 12408 KB Output is correct
10 Correct 21 ms 12280 KB Output is correct
11 Correct 19 ms 12152 KB Output is correct
12 Correct 20 ms 12152 KB Output is correct
13 Correct 27 ms 12280 KB Output is correct
14 Correct 20 ms 12280 KB Output is correct
15 Correct 21 ms 12280 KB Output is correct
16 Correct 18 ms 12152 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 12280 KB Output is correct
2 Correct 18 ms 12280 KB Output is correct
3 Correct 24 ms 12280 KB Output is correct
4 Correct 18 ms 12152 KB Output is correct
5 Correct 18 ms 12152 KB Output is correct
6 Correct 21 ms 12280 KB Output is correct
7 Correct 21 ms 12280 KB Output is correct
8 Correct 21 ms 12252 KB Output is correct
9 Correct 22 ms 12408 KB Output is correct
10 Correct 21 ms 12280 KB Output is correct
11 Correct 19 ms 12152 KB Output is correct
12 Correct 20 ms 12152 KB Output is correct
13 Correct 27 ms 12280 KB Output is correct
14 Correct 20 ms 12280 KB Output is correct
15 Correct 21 ms 12280 KB Output is correct
16 Correct 18 ms 12152 KB Output is correct
17 Correct 24 ms 12280 KB Output is correct
18 Correct 26 ms 12344 KB Output is correct
19 Correct 23 ms 12264 KB Output is correct
20 Correct 18 ms 12280 KB Output is correct
21 Correct 20 ms 12280 KB Output is correct
22 Correct 20 ms 12280 KB Output is correct
23 Correct 25 ms 12280 KB Output is correct
24 Correct 24 ms 12280 KB Output is correct
25 Correct 23 ms 12280 KB Output is correct
26 Correct 20 ms 12280 KB Output is correct
27 Correct 20 ms 12280 KB Output is correct
28 Correct 19 ms 12280 KB Output is correct
29 Correct 22 ms 12408 KB Output is correct
30 Correct 23 ms 12280 KB Output is correct
31 Correct 19 ms 12280 KB Output is correct
32 Correct 23 ms 12280 KB Output is correct

Subtask #3
62.0 / 62.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 12280 KB Output is correct
2 Correct 18 ms 12280 KB Output is correct
3 Correct 24 ms 12280 KB Output is correct
4 Correct 18 ms 12152 KB Output is correct
5 Correct 18 ms 12152 KB Output is correct
6 Correct 21 ms 12280 KB Output is correct
7 Correct 21 ms 12280 KB Output is correct
8 Correct 21 ms 12252 KB Output is correct
9 Correct 22 ms 12408 KB Output is correct
10 Correct 21 ms 12280 KB Output is correct
11 Correct 19 ms 12152 KB Output is correct
12 Correct 20 ms 12152 KB Output is correct
13 Correct 27 ms 12280 KB Output is correct
14 Correct 20 ms 12280 KB Output is correct
15 Correct 21 ms 12280 KB Output is correct
16 Correct 18 ms 12152 KB Output is correct
17 Correct 24 ms 12280 KB Output is correct
18 Correct 26 ms 12344 KB Output is correct
19 Correct 23 ms 12264 KB Output is correct
20 Correct 18 ms 12280 KB Output is correct
21 Correct 20 ms 12280 KB Output is correct
22 Correct 20 ms 12280 KB Output is correct
23 Correct 25 ms 12280 KB Output is correct
24 Correct 24 ms 12280 KB Output is correct
25 Correct 23 ms 12280 KB Output is correct
26 Correct 20 ms 12280 KB Output is correct
27 Correct 20 ms 12280 KB Output is correct
28 Correct 19 ms 12280 KB Output is correct
29 Correct 22 ms 12408 KB Output is correct
30 Correct 23 ms 12280 KB Output is correct
31 Correct 19 ms 12280 KB Output is correct
32 Correct 23 ms 12280 KB Output is correct
33 Correct 984 ms 17032 KB Output is correct
34 Correct 277 ms 17524 KB Output is correct
35 Correct 942 ms 16728 KB Output is correct
36 Correct 1504 ms 21112 KB Output is correct
37 Correct 42 ms 14840 KB Output is correct
38 Correct 1554 ms 21948 KB Output is correct
39 Correct 1528 ms 21584 KB Output is correct
40 Correct 1534 ms 21196 KB Output is correct
41 Correct 1557 ms 21184 KB Output is correct
42 Correct 1467 ms 21212 KB Output is correct
43 Correct 1518 ms 21500 KB Output is correct
44 Correct 1433 ms 21404 KB Output is correct
45 Correct 1430 ms 21328 KB Output is correct
46 Correct 1556 ms 21424 KB Output is correct
47 Correct 1642 ms 21312 KB Output is correct
48 Correct 360 ms 18496 KB Output is correct
49 Correct 372 ms 19844 KB Output is correct
50 Correct 169 ms 14328 KB Output is correct
51 Correct 172 ms 15452 KB Output is correct
52 Correct 77 ms 13944 KB Output is correct
53 Correct 591 ms 19972 KB Output is correct
54 Correct 530 ms 16048 KB Output is correct
55 Correct 1316 ms 18664 KB Output is correct
56 Correct 862 ms 16612 KB Output is correct
57 Correct 1029 ms 19644 KB Output is correct
58 Correct 65 ms 15348 KB Output is correct
59 Correct 166 ms 15184 KB Output is correct
60 Correct 325 ms 18680 KB Output is correct
61 Correct 362 ms 19144 KB Output is correct
62 Correct 209 ms 17520 KB Output is correct
63 Correct 117 ms 18396 KB Output is correct
64 Correct 123 ms 20092 KB Output is correct
65 Correct 132 ms 24056 KB Output is correct
66 Correct 231 ms 15512 KB Output is correct
67 Correct 173 ms 20600 KB Output is correct
68 Correct 359 ms 23928 KB Output is correct
69 Correct 131 ms 13688 KB Output is correct
70 Correct 47 ms 12508 KB Output is correct
71 Correct 189 ms 18168 KB Output is correct
72 Correct 250 ms 22740 KB Output is correct
73 Correct 513 ms 27256 KB Output is correct
74 Correct 700 ms 23672 KB Output is correct
75 Correct 441 ms 27000 KB Output is correct
76 Correct 430 ms 25848 KB Output is correct
77 Correct 556 ms 23928 KB Output is correct