oj.uz

Submission #236812

# Submission time Handle Problem Language Result Execution time Memory
236812 2020-06-03T12:42:31 Z MvC Mergers (JOI19_mergers) C++11
100 / 100
 1103 ms 127680 KB 
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
#define all(x) x.begin(),x.end()
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=5e5+50;
const ll mod=1e9+7;
using namespace std;
int x,y,i,n,up[nmax][20],tin[nmax],tout[nmax],tt,lc[nmax],sz[nmax],pr[nmax],deg[nmax],rs,j,lvl[nmax],c,k;
vector<int>a[nmax],vc[nmax];
void dfs(int x,int p)
{
    tin[x]=++tt;
    up[x][0]=p;
    lvl[x]=lvl[p]+1;
    for(int i=1;i<20;i++)up[x][i]=up[up[x][i-1]][i-1];
    for(int i=0;i<(int)a[x].size();i++)if(a[x][i]!=p)dfs(a[x][i],x);
    tout[x]=++tt;
}
int anc(int x,int y)
{
    return tin[x]<=tin[y] && tout[x]>=tout[y];
}
int lca(int x,int y)
{
    if(anc(x,y))return x;
    if(anc(y,x))return y;
    for(int i=19;i>=0;i--)if(!anc(up[x][i],y))x=up[x][i];
    return up[x][0];
}
int fnd(int x)
{
	if(pr[x]==x)return x;
	return pr[x]=fnd(pr[x]);
}
void uni(int x,int y)
{
	x=fnd(x),y=fnd(y);
	if(x==y)return;
	if(sz[x]<sz[y])swap(x,y);
	pr[y]=x;
	sz[x]+=sz[y];
}
void bld(int x,int p)
{
    for(int i=0;i<(int)a[x].size();i++)
    {
		int y=a[x][i];
		if(y==p)continue;
		bld(y,x);
	}
	lc[p]=max(lc[p],lc[x]-1);
	if(lc[x])uni(p,x);
}
int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>n>>k;
	for(i=1;i<n;i++)
	{
		cin>>x>>y;
		a[x].pb(y);
		a[y].pb(x);
	}
	dfs(1,1);
	for(i=1;i<=n;i++)
	{
		cin>>c;
		pr[i]=i;
		sz[i]=1;
		vc[c].pb(i);
	}
	for(i=1;i<=k;i++)
	{
		if(vc[i].empty())continue;
		x=vc[i][0];
		for(j=1;j<(int)vc[i].size();j++)x=lca(x,vc[i][j]);
		for(j=0;j<(int)vc[i].size();j++)lc[vc[i][j]]=lvl[vc[i][j]]-lvl[x];
	}
	bld(1,1);
	for(i=2;i<=n;i++)
	{
		if(lc[i])continue;
		deg[fnd(i)]++;
		deg[fnd(up[i][0])]++;
	}
	for(i=1;i<=n;i++)if(deg[i]==1)rs++;
	cout<<(rs+1)/2<<endl;
	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 23936 KB Output is correct
2 Correct 19 ms 23856 KB Output is correct
3 Correct 19 ms 23928 KB Output is correct
4 Correct 19 ms 23936 KB Output is correct
5 Correct 19 ms 23936 KB Output is correct
6 Correct 19 ms 23936 KB Output is correct
7 Correct 19 ms 23936 KB Output is correct
8 Correct 19 ms 23936 KB Output is correct
9 Correct 19 ms 23936 KB Output is correct
10 Correct 20 ms 23936 KB Output is correct
11 Correct 19 ms 23936 KB Output is correct
12 Correct 19 ms 23936 KB Output is correct
13 Correct 19 ms 23936 KB Output is correct
14 Correct 20 ms 23936 KB Output is correct
15 Correct 19 ms 23936 KB Output is correct
16 Correct 20 ms 23936 KB Output is correct
17 Correct 19 ms 23936 KB Output is correct
18 Correct 19 ms 23928 KB Output is correct
19 Correct 20 ms 23936 KB Output is correct
20 Correct 19 ms 23936 KB Output is correct
21 Correct 20 ms 23936 KB Output is correct
22 Correct 19 ms 23936 KB Output is correct
23 Correct 19 ms 23936 KB Output is correct
24 Correct 20 ms 23936 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 23936 KB Output is correct
2 Correct 19 ms 23856 KB Output is correct
3 Correct 19 ms 23928 KB Output is correct
4 Correct 19 ms 23936 KB Output is correct
5 Correct 19 ms 23936 KB Output is correct
6 Correct 19 ms 23936 KB Output is correct
7 Correct 19 ms 23936 KB Output is correct
8 Correct 19 ms 23936 KB Output is correct
9 Correct 19 ms 23936 KB Output is correct
10 Correct 20 ms 23936 KB Output is correct
11 Correct 19 ms 23936 KB Output is correct
12 Correct 19 ms 23936 KB Output is correct
13 Correct 19 ms 23936 KB Output is correct
14 Correct 20 ms 23936 KB Output is correct
15 Correct 19 ms 23936 KB Output is correct
16 Correct 20 ms 23936 KB Output is correct
17 Correct 19 ms 23936 KB Output is correct
18 Correct 19 ms 23928 KB Output is correct
19 Correct 20 ms 23936 KB Output is correct
20 Correct 19 ms 23936 KB Output is correct
21 Correct 20 ms 23936 KB Output is correct
22 Correct 19 ms 23936 KB Output is correct
23 Correct 19 ms 23936 KB Output is correct
24 Correct 20 ms 23936 KB Output is correct
25 Correct 19 ms 23936 KB Output is correct
26 Correct 21 ms 24448 KB Output is correct
27 Correct 22 ms 24320 KB Output is correct
28 Correct 21 ms 24448 KB Output is correct
29 Correct 21 ms 24448 KB Output is correct
30 Correct 21 ms 24320 KB Output is correct
31 Correct 20 ms 23936 KB Output is correct
32 Correct 21 ms 24448 KB Output is correct
33 Correct 21 ms 23936 KB Output is correct
34 Correct 21 ms 24320 KB Output is correct
35 Correct 22 ms 24448 KB Output is correct
36 Correct 21 ms 24448 KB Output is correct
37 Correct 21 ms 24320 KB Output is correct
38 Correct 19 ms 23936 KB Output is correct
39 Correct 22 ms 24320 KB Output is correct
40 Correct 21 ms 24320 KB Output is correct
41 Correct 21 ms 24320 KB Output is correct
42 Correct 21 ms 24448 KB Output is correct
43 Correct 21 ms 24448 KB Output is correct
44 Correct 19 ms 23936 KB Output is correct
45 Correct 21 ms 24448 KB Output is correct
46 Correct 22 ms 24448 KB Output is correct
47 Correct 19 ms 23936 KB Output is correct
48 Correct 21 ms 24320 KB Output is correct
49 Correct 21 ms 24448 KB Output is correct
50 Correct 22 ms 24440 KB Output is correct
51 Correct 21 ms 24320 KB Output is correct
52 Correct 21 ms 24320 KB Output is correct
53 Correct 21 ms 24448 KB Output is correct
54 Correct 20 ms 24320 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 23936 KB Output is correct
2 Correct 19 ms 23856 KB Output is correct
3 Correct 19 ms 23928 KB Output is correct
4 Correct 19 ms 23936 KB Output is correct
5 Correct 19 ms 23936 KB Output is correct
6 Correct 19 ms 23936 KB Output is correct
7 Correct 19 ms 23936 KB Output is correct
8 Correct 19 ms 23936 KB Output is correct
9 Correct 19 ms 23936 KB Output is correct
10 Correct 20 ms 23936 KB Output is correct
11 Correct 19 ms 23936 KB Output is correct
12 Correct 19 ms 23936 KB Output is correct
13 Correct 19 ms 23936 KB Output is correct
14 Correct 20 ms 23936 KB Output is correct
15 Correct 19 ms 23936 KB Output is correct
16 Correct 20 ms 23936 KB Output is correct
17 Correct 19 ms 23936 KB Output is correct
18 Correct 19 ms 23928 KB Output is correct
19 Correct 20 ms 23936 KB Output is correct
20 Correct 19 ms 23936 KB Output is correct
21 Correct 20 ms 23936 KB Output is correct
22 Correct 19 ms 23936 KB Output is correct
23 Correct 19 ms 23936 KB Output is correct
24 Correct 20 ms 23936 KB Output is correct
25 Correct 19 ms 23936 KB Output is correct
26 Correct 78 ms 39536 KB Output is correct
27 Correct 104 ms 39160 KB Output is correct
28 Correct 21 ms 24320 KB Output is correct
29 Correct 20 ms 23936 KB Output is correct
30 Correct 19 ms 23936 KB Output is correct
31 Correct 118 ms 39288 KB Output is correct
32 Correct 22 ms 24320 KB Output is correct
33 Correct 147 ms 42232 KB Output is correct
34 Correct 115 ms 39292 KB Output is correct
35 Correct 21 ms 24320 KB Output is correct
36 Correct 142 ms 39544 KB Output is correct
37 Correct 21 ms 24320 KB Output is correct
38 Correct 22 ms 24320 KB Output is correct
39 Correct 85 ms 39536 KB Output is correct
40 Correct 22 ms 24444 KB Output is correct
41 Correct 107 ms 39280 KB Output is correct
42 Correct 138 ms 40184 KB Output is correct
43 Correct 20 ms 23936 KB Output is correct
44 Correct 130 ms 42352 KB Output is correct
45 Correct 149 ms 40824 KB Output is correct
46 Correct 21 ms 24448 KB Output is correct
47 Correct 21 ms 24320 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 39664 KB Output is correct
2 Correct 97 ms 42928 KB Output is correct
3 Correct 22 ms 24448 KB Output is correct
4 Correct 24 ms 24320 KB Output is correct
5 Correct 19 ms 23936 KB Output is correct
6 Correct 20 ms 23936 KB Output is correct
7 Correct 20 ms 24320 KB Output is correct
8 Correct 137 ms 40952 KB Output is correct
9 Correct 21 ms 24320 KB Output is correct
10 Correct 115 ms 39800 KB Output is correct
11 Correct 20 ms 23808 KB Output is correct
12 Correct 139 ms 39744 KB Output is correct
13 Correct 141 ms 40952 KB Output is correct
14 Correct 129 ms 42492 KB Output is correct
15 Correct 81 ms 39620 KB Output is correct
16 Correct 21 ms 24440 KB Output is correct
17 Correct 19 ms 23936 KB Output is correct
18 Correct 100 ms 42480 KB Output is correct
19 Correct 160 ms 44152 KB Output is correct
20 Correct 21 ms 24448 KB Output is correct
21 Correct 20 ms 23808 KB Output is correct
22 Correct 111 ms 41200 KB Output is correct
23 Correct 22 ms 24320 KB Output is correct
24 Correct 146 ms 40184 KB Output is correct
25 Correct 156 ms 43640 KB Output is correct
26 Correct 22 ms 24448 KB Output is correct
27 Correct 22 ms 24448 KB Output is correct
28 Correct 21 ms 24312 KB Output is correct
29 Correct 21 ms 24320 KB Output is correct
30 Correct 21 ms 24448 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 23936 KB Output is correct
2 Correct 19 ms 23856 KB Output is correct
3 Correct 19 ms 23928 KB Output is correct
4 Correct 19 ms 23936 KB Output is correct
5 Correct 19 ms 23936 KB Output is correct
6 Correct 19 ms 23936 KB Output is correct
7 Correct 19 ms 23936 KB Output is correct
8 Correct 19 ms 23936 KB Output is correct
9 Correct 19 ms 23936 KB Output is correct
10 Correct 20 ms 23936 KB Output is correct
11 Correct 19 ms 23936 KB Output is correct
12 Correct 19 ms 23936 KB Output is correct
13 Correct 19 ms 23936 KB Output is correct
14 Correct 20 ms 23936 KB Output is correct
15 Correct 19 ms 23936 KB Output is correct
16 Correct 20 ms 23936 KB Output is correct
17 Correct 19 ms 23936 KB Output is correct
18 Correct 19 ms 23928 KB Output is correct
19 Correct 20 ms 23936 KB Output is correct
20 Correct 19 ms 23936 KB Output is correct
21 Correct 20 ms 23936 KB Output is correct
22 Correct 19 ms 23936 KB Output is correct
23 Correct 19 ms 23936 KB Output is correct
24 Correct 20 ms 23936 KB Output is correct
25 Correct 19 ms 23936 KB Output is correct
26 Correct 21 ms 24448 KB Output is correct
27 Correct 22 ms 24320 KB Output is correct
28 Correct 21 ms 24448 KB Output is correct
29 Correct 21 ms 24448 KB Output is correct
30 Correct 21 ms 24320 KB Output is correct
31 Correct 20 ms 23936 KB Output is correct
32 Correct 21 ms 24448 KB Output is correct
33 Correct 21 ms 23936 KB Output is correct
34 Correct 21 ms 24320 KB Output is correct
35 Correct 22 ms 24448 KB Output is correct
36 Correct 21 ms 24448 KB Output is correct
37 Correct 21 ms 24320 KB Output is correct
38 Correct 19 ms 23936 KB Output is correct
39 Correct 22 ms 24320 KB Output is correct
40 Correct 21 ms 24320 KB Output is correct
41 Correct 21 ms 24320 KB Output is correct
42 Correct 21 ms 24448 KB Output is correct
43 Correct 21 ms 24448 KB Output is correct
44 Correct 19 ms 23936 KB Output is correct
45 Correct 21 ms 24448 KB Output is correct
46 Correct 22 ms 24448 KB Output is correct
47 Correct 19 ms 23936 KB Output is correct
48 Correct 21 ms 24320 KB Output is correct
49 Correct 21 ms 24448 KB Output is correct
50 Correct 22 ms 24440 KB Output is correct
51 Correct 21 ms 24320 KB Output is correct
52 Correct 21 ms 24320 KB Output is correct
53 Correct 21 ms 24448 KB Output is correct
54 Correct 20 ms 24320 KB Output is correct
55 Correct 19 ms 23936 KB Output is correct
56 Correct 78 ms 39536 KB Output is correct
57 Correct 104 ms 39160 KB Output is correct
58 Correct 21 ms 24320 KB Output is correct
59 Correct 20 ms 23936 KB Output is correct
60 Correct 19 ms 23936 KB Output is correct
61 Correct 118 ms 39288 KB Output is correct
62 Correct 22 ms 24320 KB Output is correct
63 Correct 147 ms 42232 KB Output is correct
64 Correct 115 ms 39292 KB Output is correct
65 Correct 21 ms 24320 KB Output is correct
66 Correct 142 ms 39544 KB Output is correct
67 Correct 21 ms 24320 KB Output is correct
68 Correct 22 ms 24320 KB Output is correct
69 Correct 85 ms 39536 KB Output is correct
70 Correct 22 ms 24444 KB Output is correct
71 Correct 107 ms 39280 KB Output is correct
72 Correct 138 ms 40184 KB Output is correct
73 Correct 20 ms 23936 KB Output is correct
74 Correct 130 ms 42352 KB Output is correct
75 Correct 149 ms 40824 KB Output is correct
76 Correct 21 ms 24448 KB Output is correct
77 Correct 21 ms 24320 KB Output is correct
78 Correct 90 ms 39664 KB Output is correct
79 Correct 97 ms 42928 KB Output is correct
80 Correct 22 ms 24448 KB Output is correct
81 Correct 24 ms 24320 KB Output is correct
82 Correct 19 ms 23936 KB Output is correct
83 Correct 20 ms 23936 KB Output is correct
84 Correct 20 ms 24320 KB Output is correct
85 Correct 137 ms 40952 KB Output is correct
86 Correct 21 ms 24320 KB Output is correct
87 Correct 115 ms 39800 KB Output is correct
88 Correct 20 ms 23808 KB Output is correct
89 Correct 139 ms 39744 KB Output is correct
90 Correct 141 ms 40952 KB Output is correct
91 Correct 129 ms 42492 KB Output is correct
92 Correct 81 ms 39620 KB Output is correct
93 Correct 21 ms 24440 KB Output is correct
94 Correct 19 ms 23936 KB Output is correct
95 Correct 100 ms 42480 KB Output is correct
96 Correct 160 ms 44152 KB Output is correct
97 Correct 21 ms 24448 KB Output is correct
98 Correct 20 ms 23808 KB Output is correct
99 Correct 111 ms 41200 KB Output is correct
100 Correct 22 ms 24320 KB Output is correct
101 Correct 146 ms 40184 KB Output is correct
102 Correct 156 ms 43640 KB Output is correct
103 Correct 22 ms 24448 KB Output is correct
104 Correct 22 ms 24448 KB Output is correct
105 Correct 21 ms 24312 KB Output is correct
106 Correct 21 ms 24320 KB Output is correct
107 Correct 21 ms 24448 KB Output is correct
108 Correct 646 ms 110644 KB Output is correct
109 Correct 885 ms 108508 KB Output is correct
110 Correct 896 ms 113252 KB Output is correct
111 Correct 1091 ms 127680 KB Output is correct
112 Correct 1103 ms 123256 KB Output is correct
113 Correct 640 ms 117464 KB Output is correct
114 Correct 694 ms 100692 KB Output is correct
115 Correct 709 ms 100712 KB Output is correct
116 Correct 899 ms 107000 KB Output is correct
117 Correct 904 ms 117352 KB Output is correct
118 Correct 724 ms 102560 KB Output is correct
119 Correct 891 ms 117316 KB Output is correct
120 Correct 1101 ms 122740 KB Output is correct
121 Correct 955 ms 117112 KB Output is correct
122 Correct 940 ms 111096 KB Output is correct
123 Correct 628 ms 118244 KB Output is correct
124 Correct 1000 ms 115452 KB Output is correct