oj.uz

Submission #138135

# Submission time Handle Problem Language Result Execution time Memory
138135 2019-07-29T12:00:08 Z Mahmoud_Adel Mergers (JOI19_mergers) C++14
70 / 100
 1432 ms 125956 KB 
#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second
typedef long long ll;
const int N = 5e5+5;
int n, m, ans, cur, s[N], dep[N], sp[N][20], sub[N], ret[N], mark[N], deg[N];
vector<int> adj[N], vec[N];
void pre(int u, int p)
{
	sub[u] = 1;
	dep[u] = dep[p]+1;
	sp[u][0] = p;
	for(int i=1; i<20; i++) sp[u][i] = sp[sp[u][i-1]][i-1];
	for(int v : adj[u]) if(v != p) pre(v, u), sub[u] += sub[v];	
}	
int equate(int u, int v)
{
	int c = dep[u]-dep[v];
	for(int i=0; i<20; i++) if(c & (1<<i)) u = sp[u][i];
	return u;
}
int LCA(int u, int v)
{
	if(dep[u] < dep[v]) swap(u, v);
	u = equate(u, v);
	if(u == v) return u;
	for(int i=19; i>=0; i--) if(sp[u][i] != sp[v][i]) u = sp[u][i], v = sp[v][i];
	return sp[u][0];
}
void calc(int u, int p)
{
	for(auto v : adj[u]) if(v != p) calc(v, u), ret[u] += ret[v];
	if(ret[u] == sub[u]) mark[u] = 1;
}
void DFS(int u, int p, int last)
{
	for(int v : adj[u]) if(p != v)
	{
		if(mark[v]) assert(mark[last] || last == 1), deg[v]++, deg[last]++, DFS(v, u, v);
		else DFS(v, u, last);
	}
}
int main()
{
	scanf("%d %d", &n, &m);
	memset(sp, -1, sizeof sp);
	for(int i=1, a, b; i<n; i++) scanf("%d %d", &a, &b),
	adj[a].push_back(b), adj[b].push_back(a);
	for(int i=1; i<=n; i++) scanf("%d", &s[i]), vec[s[i]].push_back(i);
	pre(1, 0);
	for(int i=1; i<=m; i++) 
	{
		if(vec[i].empty()) continue;
		int node = vec[i][0];
		for(auto u : vec[i]) node = LCA(node, u);
		ret[node] += (int)vec[i].size();
	}
	calc(1, 0);
	DFS(1, 0, 1);
	for(int i=1; i<=n; i++) ans += (deg[i]==1);
	cout << (ans+1)/2 << endl;
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:46:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
mergers.cpp:49:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1, a, b; i<n; i++) scanf("%d %d", &a, &b),
                               ~~~~~~~~~~~~~~~~~~~~~~~~
  adj[a].push_back(b), adj[b].push_back(a);
  ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
mergers.cpp:50:44: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1; i<=n; i++) scanf("%d", &s[i]), vec[s[i]].push_back(i);
                          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 63096 KB Output is correct
2 Correct 57 ms 62972 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 57 ms 62968 KB Output is correct
5 Correct 57 ms 62972 KB Output is correct
6 Correct 56 ms 62968 KB Output is correct
7 Correct 56 ms 62968 KB Output is correct
8 Correct 56 ms 62968 KB Output is correct
9 Correct 56 ms 62968 KB Output is correct
10 Correct 58 ms 62940 KB Output is correct
11 Correct 57 ms 62976 KB Output is correct
12 Correct 57 ms 63068 KB Output is correct
13 Correct 58 ms 62956 KB Output is correct
14 Correct 57 ms 62964 KB Output is correct
15 Correct 57 ms 63008 KB Output is correct
16 Correct 57 ms 63068 KB Output is correct
17 Correct 63 ms 63024 KB Output is correct
18 Correct 69 ms 62968 KB Output is correct
19 Correct 68 ms 62976 KB Output is correct
20 Correct 58 ms 62968 KB Output is correct
21 Correct 69 ms 63096 KB Output is correct
22 Correct 57 ms 63048 KB Output is correct
23 Correct 69 ms 63012 KB Output is correct
24 Correct 57 ms 62968 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 63096 KB Output is correct
2 Correct 57 ms 62972 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 57 ms 62968 KB Output is correct
5 Correct 57 ms 62972 KB Output is correct
6 Correct 56 ms 62968 KB Output is correct
7 Correct 56 ms 62968 KB Output is correct
8 Correct 56 ms 62968 KB Output is correct
9 Correct 56 ms 62968 KB Output is correct
10 Correct 58 ms 62940 KB Output is correct
11 Correct 57 ms 62976 KB Output is correct
12 Correct 57 ms 63068 KB Output is correct
13 Correct 58 ms 62956 KB Output is correct
14 Correct 57 ms 62964 KB Output is correct
15 Correct 57 ms 63008 KB Output is correct
16 Correct 57 ms 63068 KB Output is correct
17 Correct 63 ms 63024 KB Output is correct
18 Correct 69 ms 62968 KB Output is correct
19 Correct 68 ms 62976 KB Output is correct
20 Correct 58 ms 62968 KB Output is correct
21 Correct 69 ms 63096 KB Output is correct
22 Correct 57 ms 63048 KB Output is correct
23 Correct 69 ms 63012 KB Output is correct
24 Correct 57 ms 62968 KB Output is correct
25 Correct 56 ms 62972 KB Output is correct
26 Correct 60 ms 63272 KB Output is correct
27 Correct 59 ms 63196 KB Output is correct
28 Correct 61 ms 63352 KB Output is correct
29 Correct 59 ms 63236 KB Output is correct
30 Correct 59 ms 63224 KB Output is correct
31 Correct 56 ms 62968 KB Output is correct
32 Correct 88 ms 63352 KB Output is correct
33 Correct 62 ms 62968 KB Output is correct
34 Correct 67 ms 63224 KB Output is correct
35 Correct 63 ms 63324 KB Output is correct
36 Correct 60 ms 63224 KB Output is correct
37 Correct 60 ms 63224 KB Output is correct
38 Correct 57 ms 62916 KB Output is correct
39 Correct 71 ms 63152 KB Output is correct
40 Correct 58 ms 63164 KB Output is correct
41 Correct 59 ms 63228 KB Output is correct
42 Correct 59 ms 63224 KB Output is correct
43 Correct 59 ms 63352 KB Output is correct
44 Correct 57 ms 63052 KB Output is correct
45 Correct 75 ms 63300 KB Output is correct
46 Correct 60 ms 63224 KB Output is correct
47 Correct 71 ms 62968 KB Output is correct
48 Correct 59 ms 63224 KB Output is correct
49 Correct 69 ms 63196 KB Output is correct
50 Correct 59 ms 63352 KB Output is correct
51 Correct 67 ms 63200 KB Output is correct
52 Correct 59 ms 63224 KB Output is correct
53 Correct 59 ms 63224 KB Output is correct
54 Correct 59 ms 63224 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 63096 KB Output is correct
2 Correct 57 ms 62972 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 57 ms 62968 KB Output is correct
5 Correct 57 ms 62972 KB Output is correct
6 Correct 56 ms 62968 KB Output is correct
7 Correct 56 ms 62968 KB Output is correct
8 Correct 56 ms 62968 KB Output is correct
9 Correct 56 ms 62968 KB Output is correct
10 Correct 58 ms 62940 KB Output is correct
11 Correct 57 ms 62976 KB Output is correct
12 Correct 57 ms 63068 KB Output is correct
13 Correct 58 ms 62956 KB Output is correct
14 Correct 57 ms 62964 KB Output is correct
15 Correct 57 ms 63008 KB Output is correct
16 Correct 57 ms 63068 KB Output is correct
17 Correct 63 ms 63024 KB Output is correct
18 Correct 69 ms 62968 KB Output is correct
19 Correct 68 ms 62976 KB Output is correct
20 Correct 58 ms 62968 KB Output is correct
21 Correct 69 ms 63096 KB Output is correct
22 Correct 57 ms 63048 KB Output is correct
23 Correct 69 ms 63012 KB Output is correct
24 Correct 57 ms 62968 KB Output is correct
25 Correct 57 ms 62940 KB Output is correct
26 Correct 151 ms 68332 KB Output is correct
27 Correct 180 ms 68344 KB Output is correct
28 Correct 59 ms 63220 KB Output is correct
29 Correct 57 ms 62996 KB Output is correct
30 Correct 57 ms 63096 KB Output is correct
31 Correct 174 ms 68536 KB Output is correct
32 Correct 59 ms 63224 KB Output is correct
33 Correct 242 ms 74096 KB Output is correct
34 Correct 184 ms 68480 KB Output is correct
35 Correct 59 ms 63224 KB Output is correct
36 Correct 208 ms 69112 KB Output is correct
37 Correct 59 ms 63096 KB Output is correct
38 Correct 59 ms 63132 KB Output is correct
39 Correct 140 ms 68208 KB Output is correct
40 Correct 58 ms 63352 KB Output is correct
41 Correct 174 ms 68384 KB Output is correct
42 Correct 228 ms 70136 KB Output is correct
43 Correct 57 ms 62968 KB Output is correct
44 Correct 260 ms 74368 KB Output is correct
45 Correct 209 ms 71348 KB Output is correct
46 Correct 62 ms 63236 KB Output is correct
47 Correct 69 ms 63096 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 68312 KB Output is correct
2 Correct 182 ms 72080 KB Output is correct
3 Correct 59 ms 63224 KB Output is correct
4 Correct 60 ms 63224 KB Output is correct
5 Correct 56 ms 62972 KB Output is correct
6 Correct 58 ms 62968 KB Output is correct
7 Correct 58 ms 63224 KB Output is correct
8 Correct 202 ms 70132 KB Output is correct
9 Correct 60 ms 63224 KB Output is correct
10 Correct 185 ms 69188 KB Output is correct
11 Correct 56 ms 62968 KB Output is correct
12 Correct 209 ms 69072 KB Output is correct
13 Correct 262 ms 70180 KB Output is correct
14 Correct 202 ms 71748 KB Output is correct
15 Correct 142 ms 68236 KB Output is correct
16 Correct 61 ms 63224 KB Output is correct
17 Correct 57 ms 62968 KB Output is correct
18 Correct 179 ms 71664 KB Output is correct
19 Correct 245 ms 74872 KB Output is correct
20 Correct 59 ms 63224 KB Output is correct
21 Correct 57 ms 62996 KB Output is correct
22 Correct 166 ms 70552 KB Output is correct
23 Correct 59 ms 63224 KB Output is correct
24 Correct 211 ms 69368 KB Output is correct
25 Correct 218 ms 73720 KB Output is correct
26 Correct 67 ms 63228 KB Output is correct
27 Correct 60 ms 63352 KB Output is correct
28 Correct 59 ms 63224 KB Output is correct
29 Correct 58 ms 63124 KB Output is correct
30 Correct 58 ms 63096 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 63096 KB Output is correct
2 Correct 57 ms 62972 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 57 ms 62968 KB Output is correct
5 Correct 57 ms 62972 KB Output is correct
6 Correct 56 ms 62968 KB Output is correct
7 Correct 56 ms 62968 KB Output is correct
8 Correct 56 ms 62968 KB Output is correct
9 Correct 56 ms 62968 KB Output is correct
10 Correct 58 ms 62940 KB Output is correct
11 Correct 57 ms 62976 KB Output is correct
12 Correct 57 ms 63068 KB Output is correct
13 Correct 58 ms 62956 KB Output is correct
14 Correct 57 ms 62964 KB Output is correct
15 Correct 57 ms 63008 KB Output is correct
16 Correct 57 ms 63068 KB Output is correct
17 Correct 63 ms 63024 KB Output is correct
18 Correct 69 ms 62968 KB Output is correct
19 Correct 68 ms 62976 KB Output is correct
20 Correct 58 ms 62968 KB Output is correct
21 Correct 69 ms 63096 KB Output is correct
22 Correct 57 ms 63048 KB Output is correct
23 Correct 69 ms 63012 KB Output is correct
24 Correct 57 ms 62968 KB Output is correct
25 Correct 56 ms 62972 KB Output is correct
26 Correct 60 ms 63272 KB Output is correct
27 Correct 59 ms 63196 KB Output is correct
28 Correct 61 ms 63352 KB Output is correct
29 Correct 59 ms 63236 KB Output is correct
30 Correct 59 ms 63224 KB Output is correct
31 Correct 56 ms 62968 KB Output is correct
32 Correct 88 ms 63352 KB Output is correct
33 Correct 62 ms 62968 KB Output is correct
34 Correct 67 ms 63224 KB Output is correct
35 Correct 63 ms 63324 KB Output is correct
36 Correct 60 ms 63224 KB Output is correct
37 Correct 60 ms 63224 KB Output is correct
38 Correct 57 ms 62916 KB Output is correct
39 Correct 71 ms 63152 KB Output is correct
40 Correct 58 ms 63164 KB Output is correct
41 Correct 59 ms 63228 KB Output is correct
42 Correct 59 ms 63224 KB Output is correct
43 Correct 59 ms 63352 KB Output is correct
44 Correct 57 ms 63052 KB Output is correct
45 Correct 75 ms 63300 KB Output is correct
46 Correct 60 ms 63224 KB Output is correct
47 Correct 71 ms 62968 KB Output is correct
48 Correct 59 ms 63224 KB Output is correct
49 Correct 69 ms 63196 KB Output is correct
50 Correct 59 ms 63352 KB Output is correct
51 Correct 67 ms 63200 KB Output is correct
52 Correct 59 ms 63224 KB Output is correct
53 Correct 59 ms 63224 KB Output is correct
54 Correct 59 ms 63224 KB Output is correct
55 Correct 57 ms 62940 KB Output is correct
56 Correct 151 ms 68332 KB Output is correct
57 Correct 180 ms 68344 KB Output is correct
58 Correct 59 ms 63220 KB Output is correct
59 Correct 57 ms 62996 KB Output is correct
60 Correct 57 ms 63096 KB Output is correct
61 Correct 174 ms 68536 KB Output is correct
62 Correct 59 ms 63224 KB Output is correct
63 Correct 242 ms 74096 KB Output is correct
64 Correct 184 ms 68480 KB Output is correct
65 Correct 59 ms 63224 KB Output is correct
66 Correct 208 ms 69112 KB Output is correct
67 Correct 59 ms 63096 KB Output is correct
68 Correct 59 ms 63132 KB Output is correct
69 Correct 140 ms 68208 KB Output is correct
70 Correct 58 ms 63352 KB Output is correct
71 Correct 174 ms 68384 KB Output is correct
72 Correct 228 ms 70136 KB Output is correct
73 Correct 57 ms 62968 KB Output is correct
74 Correct 260 ms 74368 KB Output is correct
75 Correct 209 ms 71348 KB Output is correct
76 Correct 62 ms 63236 KB Output is correct
77 Correct 69 ms 63096 KB Output is correct
78 Correct 158 ms 68312 KB Output is correct
79 Correct 182 ms 72080 KB Output is correct
80 Correct 59 ms 63224 KB Output is correct
81 Correct 60 ms 63224 KB Output is correct
82 Correct 56 ms 62972 KB Output is correct
83 Correct 58 ms 62968 KB Output is correct
84 Correct 58 ms 63224 KB Output is correct
85 Correct 202 ms 70132 KB Output is correct
86 Correct 60 ms 63224 KB Output is correct
87 Correct 185 ms 69188 KB Output is correct
88 Correct 56 ms 62968 KB Output is correct
89 Correct 209 ms 69072 KB Output is correct
90 Correct 262 ms 70180 KB Output is correct
91 Correct 202 ms 71748 KB Output is correct
92 Correct 142 ms 68236 KB Output is correct
93 Correct 61 ms 63224 KB Output is correct
94 Correct 57 ms 62968 KB Output is correct
95 Correct 179 ms 71664 KB Output is correct
96 Correct 245 ms 74872 KB Output is correct
97 Correct 59 ms 63224 KB Output is correct
98 Correct 57 ms 62996 KB Output is correct
99 Correct 166 ms 70552 KB Output is correct
100 Correct 59 ms 63224 KB Output is correct
101 Correct 211 ms 69368 KB Output is correct
102 Correct 218 ms 73720 KB Output is correct
103 Correct 67 ms 63228 KB Output is correct
104 Correct 60 ms 63352 KB Output is correct
105 Correct 59 ms 63224 KB Output is correct
106 Correct 58 ms 63124 KB Output is correct
107 Correct 58 ms 63096 KB Output is correct
108 Correct 826 ms 98768 KB Output is correct
109 Correct 1326 ms 105140 KB Output is correct
110 Correct 1360 ms 113636 KB Output is correct
111 Correct 1432 ms 125956 KB Output is correct
112 Correct 1346 ms 118008 KB Output is correct
113 Correct 881 ms 107428 KB Output is correct
114 Incorrect 972 ms 90188 KB Output isn't correct
115 Halted 0 ms 0 KB -