oj.uz

Submission #153768

# Submission time Handle Problem Language Result Execution time Memory
153768 2019-09-15T20:42:51 Z tutis Cats or Dogs (JOI18_catdog) C++17
100 / 100
 1816 ms 28536 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

# Verdict Execution time Memory Grader output
1 Correct 19 ms 12196 KB Output is correct
2 Correct 18 ms 12152 KB Output is correct
3 Correct 20 ms 12152 KB Output is correct
4 Correct 19 ms 12152 KB Output is correct
5 Correct 22 ms 12252 KB Output is correct
6 Correct 19 ms 12152 KB Output is correct
7 Correct 19 ms 12152 KB Output is correct
8 Correct 19 ms 12152 KB Output is correct
9 Correct 19 ms 12152 KB Output is correct
10 Correct 18 ms 12152 KB Output is correct
11 Correct 18 ms 12152 KB Output is correct
12 Correct 19 ms 12152 KB Output is correct
13 Correct 18 ms 12152 KB Output is correct
14 Correct 19 ms 12152 KB Output is correct
15 Correct 19 ms 12152 KB Output is correct
16 Correct 19 ms 12280 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 12196 KB Output is correct
2 Correct 18 ms 12152 KB Output is correct
3 Correct 20 ms 12152 KB Output is correct
4 Correct 19 ms 12152 KB Output is correct
5 Correct 22 ms 12252 KB Output is correct
6 Correct 19 ms 12152 KB Output is correct
7 Correct 19 ms 12152 KB Output is correct
8 Correct 19 ms 12152 KB Output is correct
9 Correct 19 ms 12152 KB Output is correct
10 Correct 18 ms 12152 KB Output is correct
11 Correct 18 ms 12152 KB Output is correct
12 Correct 19 ms 12152 KB Output is correct
13 Correct 18 ms 12152 KB Output is correct
14 Correct 19 ms 12152 KB Output is correct
15 Correct 19 ms 12152 KB Output is correct
16 Correct 19 ms 12280 KB Output is correct
17 Correct 24 ms 12280 KB Output is correct
18 Correct 24 ms 12408 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 12328 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 19 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 20 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

# Verdict Execution time Memory Grader output
1 Correct 19 ms 12196 KB Output is correct
2 Correct 18 ms 12152 KB Output is correct
3 Correct 20 ms 12152 KB Output is correct
4 Correct 19 ms 12152 KB Output is correct
5 Correct 22 ms 12252 KB Output is correct
6 Correct 19 ms 12152 KB Output is correct
7 Correct 19 ms 12152 KB Output is correct
8 Correct 19 ms 12152 KB Output is correct
9 Correct 19 ms 12152 KB Output is correct
10 Correct 18 ms 12152 KB Output is correct
11 Correct 18 ms 12152 KB Output is correct
12 Correct 19 ms 12152 KB Output is correct
13 Correct 18 ms 12152 KB Output is correct
14 Correct 19 ms 12152 KB Output is correct
15 Correct 19 ms 12152 KB Output is correct
16 Correct 19 ms 12280 KB Output is correct
17 Correct 24 ms 12280 KB Output is correct
18 Correct 24 ms 12408 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 12328 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 19 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 20 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 985 ms 17280 KB Output is correct
34 Correct 266 ms 17272 KB Output is correct
35 Correct 940 ms 16360 KB Output is correct
36 Correct 1601 ms 20524 KB Output is correct
37 Correct 45 ms 14712 KB Output is correct
38 Correct 1816 ms 21316 KB Output is correct
39 Correct 1657 ms 21696 KB Output is correct
40 Correct 1558 ms 21700 KB Output is correct
41 Correct 1550 ms 21788 KB Output is correct
42 Correct 1536 ms 21708 KB Output is correct
43 Correct 1463 ms 21716 KB Output is correct
44 Correct 1414 ms 22092 KB Output is correct
45 Correct 1419 ms 22088 KB Output is correct
46 Correct 1473 ms 22084 KB Output is correct
47 Correct 1524 ms 22084 KB Output is correct
48 Correct 357 ms 19132 KB Output is correct
49 Correct 375 ms 20768 KB Output is correct
50 Correct 164 ms 14348 KB Output is correct
51 Correct 170 ms 15560 KB Output is correct
52 Correct 77 ms 13960 KB Output is correct
53 Correct 601 ms 20888 KB Output is correct
54 Correct 505 ms 16368 KB Output is correct
55 Correct 1311 ms 19796 KB Output is correct
56 Correct 856 ms 17212 KB Output is correct
57 Correct 1037 ms 20792 KB Output is correct
58 Correct 66 ms 15476 KB Output is correct
59 Correct 162 ms 15480 KB Output is correct
60 Correct 325 ms 19960 KB Output is correct
61 Correct 364 ms 20192 KB Output is correct
62 Correct 210 ms 18328 KB Output is correct
63 Correct 117 ms 18800 KB Output is correct
64 Correct 122 ms 20536 KB Output is correct
65 Correct 134 ms 24992 KB Output is correct
66 Correct 232 ms 15736 KB Output is correct
67 Correct 175 ms 21240 KB Output is correct
68 Correct 359 ms 25208 KB Output is correct
69 Correct 131 ms 13712 KB Output is correct
70 Correct 47 ms 12408 KB Output is correct
71 Correct 189 ms 18552 KB Output is correct
72 Correct 242 ms 23544 KB Output is correct
73 Correct 513 ms 28520 KB Output is correct
74 Correct 553 ms 24952 KB Output is correct
75 Correct 422 ms 28536 KB Output is correct
76 Correct 426 ms 27228 KB Output is correct
77 Correct 549 ms 25308 KB Output is correct