oj.uz

Submission #128273

# Submission time Handle Problem Language Result Execution time Memory
128273 2019-07-10T15:48:10 Z mohammedehab2002 Mergers (JOI19_mergers) C++11
100 / 100
 1603 ms 144248 KB 
#include <iostream>
#include <vector>
#include <set>
using namespace std;
int st[500005],dep[500005],dp[20][500005],q[500005],par[500005],deg[500005];
set<pair<int,int> > s;
vector<int> v[500005],inv[500005],comp[500005];
void pre(int node,int p)
{
	dep[node]=dep[p]+1;
	dp[0][node]=p;
	for (int i=1;i<20;i++)
	dp[i][node]=dp[i-1][dp[i-1][node]];
	for (int u:v[node])
	{
		if (u!=p)
		pre(u,node);
	}
}
int lca(int u,int v)
{
	if (dep[u]<dep[v])
	swap(u,v);
	int dist=dep[u]-dep[v];
	for (int i=0;i<20;i++)
	{
		if (dist&(1<<i))
		u=dp[i][u];
	}
	if (u==v)
	return u;
	for (int i=19;i>=0;i--)
	{
		if (dp[i][u]!=dp[i][v])
		{
			u=dp[i][u];
			v=dp[i][v];
		}
	}
	return dp[0][u];
}
int find(int x)
{
	if (par[x]!=x)
	par[x]=find(par[x]);
	return par[x];
}
void Union(int x,int y)
{
	x=find(x);
	y=find(y);
	if (x!=y)
	par[x]=y;
}
void update(int u,int v)
{
	while (dep[u]>dep[v])
	{
		Union(u,dp[0][u]);
		u=find(u);
	}
}
void get(int node,int p,int to)
{
	for (int u:v[node])
	{
		if (u!=p)
		{
			if (find(u)==find(node))
			get(u,node,to);
			else
			{
				deg[to]++;
				deg[u]++;
				get(u,node,u);
			}
		}
	}
}
int main()
{
	int n,k;
	scanf("%d%d",&n,&k);
	for (int i=1;i<n;i++)
	{
		int a,b;
		scanf("%d%d",&a,&b);
		v[a].push_back(b);
		v[b].push_back(a);
	}
	for (int i=1;i<=n;i++)
	{
		par[i]=i;
		scanf("%d",&st[i]);
		inv[st[i]].push_back(i);
	}
	pre(1,0);
	for (int i=1;i<=k;i++)
	{
		int node=inv[i][0];
		for (int u:inv[i])
		node=lca(node,u);
		for (int u:inv[i])
		q[u]=node;
	}
	for (int i=1;i<=n;i++)
	update(i,q[i]);
	get(1,0,1);
	int cnt=0;
	for (int i=1;i<=n;i++)
	cnt+=(deg[i]==1);
	printf("%d",(cnt+1)/2);
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:83:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&k);
  ~~~~~^~~~~~~~~~~~~~
mergers.cpp:87:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&a,&b);
   ~~~~~^~~~~~~~~~~~~~
mergers.cpp:94:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&st[i]);
   ~~~~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 35704 KB Output is correct
2 Correct 42 ms 35704 KB Output is correct
3 Correct 35 ms 35704 KB Output is correct
4 Correct 36 ms 35704 KB Output is correct
5 Correct 36 ms 35832 KB Output is correct
6 Correct 36 ms 35704 KB Output is correct
7 Correct 35 ms 35704 KB Output is correct
8 Correct 36 ms 35704 KB Output is correct
9 Correct 35 ms 35704 KB Output is correct
10 Correct 42 ms 35704 KB Output is correct
11 Correct 36 ms 35704 KB Output is correct
12 Correct 36 ms 35704 KB Output is correct
13 Correct 41 ms 35832 KB Output is correct
14 Correct 42 ms 35704 KB Output is correct
15 Correct 45 ms 35808 KB Output is correct
16 Correct 42 ms 35704 KB Output is correct
17 Correct 37 ms 35704 KB Output is correct
18 Correct 36 ms 35832 KB Output is correct
19 Correct 41 ms 35684 KB Output is correct
20 Correct 38 ms 35704 KB Output is correct
21 Correct 48 ms 35704 KB Output is correct
22 Correct 60 ms 35788 KB Output is correct
23 Correct 35 ms 35704 KB Output is correct
24 Correct 35 ms 35704 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 35704 KB Output is correct
2 Correct 42 ms 35704 KB Output is correct
3 Correct 35 ms 35704 KB Output is correct
4 Correct 36 ms 35704 KB Output is correct
5 Correct 36 ms 35832 KB Output is correct
6 Correct 36 ms 35704 KB Output is correct
7 Correct 35 ms 35704 KB Output is correct
8 Correct 36 ms 35704 KB Output is correct
9 Correct 35 ms 35704 KB Output is correct
10 Correct 42 ms 35704 KB Output is correct
11 Correct 36 ms 35704 KB Output is correct
12 Correct 36 ms 35704 KB Output is correct
13 Correct 41 ms 35832 KB Output is correct
14 Correct 42 ms 35704 KB Output is correct
15 Correct 45 ms 35808 KB Output is correct
16 Correct 42 ms 35704 KB Output is correct
17 Correct 37 ms 35704 KB Output is correct
18 Correct 36 ms 35832 KB Output is correct
19 Correct 41 ms 35684 KB Output is correct
20 Correct 38 ms 35704 KB Output is correct
21 Correct 48 ms 35704 KB Output is correct
22 Correct 60 ms 35788 KB Output is correct
23 Correct 35 ms 35704 KB Output is correct
24 Correct 35 ms 35704 KB Output is correct
25 Correct 40 ms 35704 KB Output is correct
26 Correct 48 ms 36196 KB Output is correct
27 Correct 47 ms 36216 KB Output is correct
28 Correct 47 ms 36344 KB Output is correct
29 Correct 38 ms 36216 KB Output is correct
30 Correct 38 ms 36216 KB Output is correct
31 Correct 59 ms 35704 KB Output is correct
32 Correct 39 ms 36472 KB Output is correct
33 Correct 36 ms 35832 KB Output is correct
34 Correct 37 ms 36216 KB Output is correct
35 Correct 39 ms 36188 KB Output is correct
36 Correct 38 ms 36088 KB Output is correct
37 Correct 38 ms 36188 KB Output is correct
38 Correct 35 ms 35704 KB Output is correct
39 Correct 46 ms 36212 KB Output is correct
40 Correct 45 ms 36088 KB Output is correct
41 Correct 38 ms 36216 KB Output is correct
42 Correct 38 ms 36216 KB Output is correct
43 Correct 39 ms 36468 KB Output is correct
44 Correct 36 ms 35704 KB Output is correct
45 Correct 40 ms 36472 KB Output is correct
46 Correct 46 ms 36252 KB Output is correct
47 Correct 36 ms 35808 KB Output is correct
48 Correct 39 ms 36216 KB Output is correct
49 Correct 43 ms 36320 KB Output is correct
50 Correct 39 ms 36344 KB Output is correct
51 Correct 47 ms 36216 KB Output is correct
52 Correct 39 ms 36216 KB Output is correct
53 Correct 45 ms 36216 KB Output is correct
54 Correct 38 ms 36216 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 35704 KB Output is correct
2 Correct 42 ms 35704 KB Output is correct
3 Correct 35 ms 35704 KB Output is correct
4 Correct 36 ms 35704 KB Output is correct
5 Correct 36 ms 35832 KB Output is correct
6 Correct 36 ms 35704 KB Output is correct
7 Correct 35 ms 35704 KB Output is correct
8 Correct 36 ms 35704 KB Output is correct
9 Correct 35 ms 35704 KB Output is correct
10 Correct 42 ms 35704 KB Output is correct
11 Correct 36 ms 35704 KB Output is correct
12 Correct 36 ms 35704 KB Output is correct
13 Correct 41 ms 35832 KB Output is correct
14 Correct 42 ms 35704 KB Output is correct
15 Correct 45 ms 35808 KB Output is correct
16 Correct 42 ms 35704 KB Output is correct
17 Correct 37 ms 35704 KB Output is correct
18 Correct 36 ms 35832 KB Output is correct
19 Correct 41 ms 35684 KB Output is correct
20 Correct 38 ms 35704 KB Output is correct
21 Correct 48 ms 35704 KB Output is correct
22 Correct 60 ms 35788 KB Output is correct
23 Correct 35 ms 35704 KB Output is correct
24 Correct 35 ms 35704 KB Output is correct
25 Correct 42 ms 35704 KB Output is correct
26 Correct 149 ms 49492 KB Output is correct
27 Correct 197 ms 49144 KB Output is correct
28 Correct 38 ms 36264 KB Output is correct
29 Correct 36 ms 35704 KB Output is correct
30 Correct 39 ms 35704 KB Output is correct
31 Correct 234 ms 49124 KB Output is correct
32 Correct 48 ms 36216 KB Output is correct
33 Correct 243 ms 56272 KB Output is correct
34 Correct 250 ms 50296 KB Output is correct
35 Correct 46 ms 36136 KB Output is correct
36 Correct 273 ms 51124 KB Output is correct
37 Correct 38 ms 36216 KB Output is correct
38 Correct 47 ms 36220 KB Output is correct
39 Correct 184 ms 50540 KB Output is correct
40 Correct 61 ms 36472 KB Output is correct
41 Correct 219 ms 50204 KB Output is correct
42 Correct 294 ms 52600 KB Output is correct
43 Correct 37 ms 35704 KB Output is correct
44 Correct 243 ms 57740 KB Output is correct
45 Correct 233 ms 54136 KB Output is correct
46 Correct 46 ms 36212 KB Output is correct
47 Correct 39 ms 36088 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 149 ms 49136 KB Output is correct
2 Correct 185 ms 52348 KB Output is correct
3 Correct 47 ms 36216 KB Output is correct
4 Correct 48 ms 36216 KB Output is correct
5 Correct 36 ms 35704 KB Output is correct
6 Correct 36 ms 35780 KB Output is correct
7 Correct 38 ms 36216 KB Output is correct
8 Correct 240 ms 50436 KB Output is correct
9 Correct 38 ms 36088 KB Output is correct
10 Correct 245 ms 49276 KB Output is correct
11 Correct 36 ms 35704 KB Output is correct
12 Correct 218 ms 49272 KB Output is correct
13 Correct 228 ms 50296 KB Output is correct
14 Correct 218 ms 51908 KB Output is correct
15 Correct 161 ms 49300 KB Output is correct
16 Correct 46 ms 36216 KB Output is correct
17 Correct 41 ms 35704 KB Output is correct
18 Correct 194 ms 51880 KB Output is correct
19 Correct 249 ms 55800 KB Output is correct
20 Correct 39 ms 36216 KB Output is correct
21 Correct 32 ms 35700 KB Output is correct
22 Correct 187 ms 50668 KB Output is correct
23 Correct 38 ms 36216 KB Output is correct
24 Correct 224 ms 49592 KB Output is correct
25 Correct 243 ms 54448 KB Output is correct
26 Correct 38 ms 36216 KB Output is correct
27 Correct 38 ms 36216 KB Output is correct
28 Correct 39 ms 36216 KB Output is correct
29 Correct 37 ms 36216 KB Output is correct
30 Correct 38 ms 36216 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 35704 KB Output is correct
2 Correct 42 ms 35704 KB Output is correct
3 Correct 35 ms 35704 KB Output is correct
4 Correct 36 ms 35704 KB Output is correct
5 Correct 36 ms 35832 KB Output is correct
6 Correct 36 ms 35704 KB Output is correct
7 Correct 35 ms 35704 KB Output is correct
8 Correct 36 ms 35704 KB Output is correct
9 Correct 35 ms 35704 KB Output is correct
10 Correct 42 ms 35704 KB Output is correct
11 Correct 36 ms 35704 KB Output is correct
12 Correct 36 ms 35704 KB Output is correct
13 Correct 41 ms 35832 KB Output is correct
14 Correct 42 ms 35704 KB Output is correct
15 Correct 45 ms 35808 KB Output is correct
16 Correct 42 ms 35704 KB Output is correct
17 Correct 37 ms 35704 KB Output is correct
18 Correct 36 ms 35832 KB Output is correct
19 Correct 41 ms 35684 KB Output is correct
20 Correct 38 ms 35704 KB Output is correct
21 Correct 48 ms 35704 KB Output is correct
22 Correct 60 ms 35788 KB Output is correct
23 Correct 35 ms 35704 KB Output is correct
24 Correct 35 ms 35704 KB Output is correct
25 Correct 40 ms 35704 KB Output is correct
26 Correct 48 ms 36196 KB Output is correct
27 Correct 47 ms 36216 KB Output is correct
28 Correct 47 ms 36344 KB Output is correct
29 Correct 38 ms 36216 KB Output is correct
30 Correct 38 ms 36216 KB Output is correct
31 Correct 59 ms 35704 KB Output is correct
32 Correct 39 ms 36472 KB Output is correct
33 Correct 36 ms 35832 KB Output is correct
34 Correct 37 ms 36216 KB Output is correct
35 Correct 39 ms 36188 KB Output is correct
36 Correct 38 ms 36088 KB Output is correct
37 Correct 38 ms 36188 KB Output is correct
38 Correct 35 ms 35704 KB Output is correct
39 Correct 46 ms 36212 KB Output is correct
40 Correct 45 ms 36088 KB Output is correct
41 Correct 38 ms 36216 KB Output is correct
42 Correct 38 ms 36216 KB Output is correct
43 Correct 39 ms 36468 KB Output is correct
44 Correct 36 ms 35704 KB Output is correct
45 Correct 40 ms 36472 KB Output is correct
46 Correct 46 ms 36252 KB Output is correct
47 Correct 36 ms 35808 KB Output is correct
48 Correct 39 ms 36216 KB Output is correct
49 Correct 43 ms 36320 KB Output is correct
50 Correct 39 ms 36344 KB Output is correct
51 Correct 47 ms 36216 KB Output is correct
52 Correct 39 ms 36216 KB Output is correct
53 Correct 45 ms 36216 KB Output is correct
54 Correct 38 ms 36216 KB Output is correct
55 Correct 42 ms 35704 KB Output is correct
56 Correct 149 ms 49492 KB Output is correct
57 Correct 197 ms 49144 KB Output is correct
58 Correct 38 ms 36264 KB Output is correct
59 Correct 36 ms 35704 KB Output is correct
60 Correct 39 ms 35704 KB Output is correct
61 Correct 234 ms 49124 KB Output is correct
62 Correct 48 ms 36216 KB Output is correct
63 Correct 243 ms 56272 KB Output is correct
64 Correct 250 ms 50296 KB Output is correct
65 Correct 46 ms 36136 KB Output is correct
66 Correct 273 ms 51124 KB Output is correct
67 Correct 38 ms 36216 KB Output is correct
68 Correct 47 ms 36220 KB Output is correct
69 Correct 184 ms 50540 KB Output is correct
70 Correct 61 ms 36472 KB Output is correct
71 Correct 219 ms 50204 KB Output is correct
72 Correct 294 ms 52600 KB Output is correct
73 Correct 37 ms 35704 KB Output is correct
74 Correct 243 ms 57740 KB Output is correct
75 Correct 233 ms 54136 KB Output is correct
76 Correct 46 ms 36212 KB Output is correct
77 Correct 39 ms 36088 KB Output is correct
78 Correct 149 ms 49136 KB Output is correct
79 Correct 185 ms 52348 KB Output is correct
80 Correct 47 ms 36216 KB Output is correct
81 Correct 48 ms 36216 KB Output is correct
82 Correct 36 ms 35704 KB Output is correct
83 Correct 36 ms 35780 KB Output is correct
84 Correct 38 ms 36216 KB Output is correct
85 Correct 240 ms 50436 KB Output is correct
86 Correct 38 ms 36088 KB Output is correct
87 Correct 245 ms 49276 KB Output is correct
88 Correct 36 ms 35704 KB Output is correct
89 Correct 218 ms 49272 KB Output is correct
90 Correct 228 ms 50296 KB Output is correct
91 Correct 218 ms 51908 KB Output is correct
92 Correct 161 ms 49300 KB Output is correct
93 Correct 46 ms 36216 KB Output is correct
94 Correct 41 ms 35704 KB Output is correct
95 Correct 194 ms 51880 KB Output is correct
96 Correct 249 ms 55800 KB Output is correct
97 Correct 39 ms 36216 KB Output is correct
98 Correct 32 ms 35700 KB Output is correct
99 Correct 187 ms 50668 KB Output is correct
100 Correct 38 ms 36216 KB Output is correct
101 Correct 224 ms 49592 KB Output is correct
102 Correct 243 ms 54448 KB Output is correct
103 Correct 38 ms 36216 KB Output is correct
104 Correct 38 ms 36216 KB Output is correct
105 Correct 39 ms 36216 KB Output is correct
106 Correct 37 ms 36216 KB Output is correct
107 Correct 38 ms 36216 KB Output is correct
108 Correct 1069 ms 113252 KB Output is correct
109 Correct 1545 ms 123700 KB Output is correct
110 Correct 1603 ms 134864 KB Output is correct
111 Correct 1530 ms 144248 KB Output is correct
112 Correct 1554 ms 134592 KB Output is correct
113 Correct 1193 ms 121084 KB Output is correct
114 Correct 1092 ms 105824 KB Output is correct
115 Correct 1089 ms 105664 KB Output is correct
116 Correct 1427 ms 110052 KB Output is correct
117 Correct 1229 ms 121228 KB Output is correct
118 Correct 1227 ms 106992 KB Output is correct
119 Correct 1247 ms 121384 KB Output is correct
120 Correct 1504 ms 135036 KB Output is correct
121 Correct 1267 ms 116836 KB Output is correct
122 Correct 1508 ms 110516 KB Output is correct
123 Correct 998 ms 119652 KB Output is correct
124 Correct 1381 ms 119476 KB Output is correct