oj.uz

Submission #112593

# Submission time Handle Problem Language Result Execution time Memory
112593 2019-05-20T18:40:22 Z Bruteforceman Mergers (JOI19_mergers) C++11
100 / 100
 1398 ms 126668 KB 
#include "bits/stdc++.h"
using namespace std;
int city[500010];
int cnt[500010];
vector <int> g[500010];
int P[500010];

int root(int x) {
	if(x == P[x]) return P[x];
	return P[x] = root(P[x]);
}
void join(int x, int y) {
	x = root(x);
	y = root(y);
	if(x != y) {
		P[x] = y;
	}
}

void dfs(int x, int par, map <int, int> &s) {
	if(cnt[city[x]] > 1) {
		s[city[x]] = 1;
	}
	for(auto i : g[x]) {
		if(i - par) {
			map <int, int> t;
			dfs(i, x, t);
			if(t.size() > s.size()) s.swap(t);
			for(auto j : t) {
				s[j.first] += j.second;
				if(cnt[j.first] == s[j.first]) {
					s.erase(j.first);
				} 
			}
		}
	}
	if(!s.empty()) {
		join(x, par);
	}
}

int l[500010], r[500010];
int deg[500010];

int main(int argc, char const *argv[])
{
	int n, m;
	scanf("%d %d", &n, &m);
	for(int i = 1; i < n; i++) {
		int p, q;
		scanf("%d %d", &p, &q);
		g[p].push_back(q);
		g[q].push_back(p);
		l[i] = p;
		r[i] = q;
	}
	for(int i = 1; i <= n; i++) {
		scanf("%d", &city[i]);
		cnt[city[i]] += 1;
		P[i] = i; 
	}
	map <int, int> s;
	dfs(1, 0, s);

	set <int> node;
	for(int i = 1; i <= n; i++) {
		node.insert(root(i));
	}
	for(int i = 1; i < n; i++) {
		if(root(l[i]) != root(r[i])) {
			++deg[root(l[i])];
			++deg[root(r[i])];
		}
	}
	int ans = 0;
	for(auto i : node) {
		if(deg[i] <= 1) {
			++ans;
		}
	}
	if(ans > 1) {
		ans = (ans + 1) / 2; 
	} else {
		ans = 0;
	}
	printf("%d\n", ans);
	return 0;
}

Compilation message

mergers.cpp: In function 'int main(int, const char**)':
mergers.cpp:48:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
mergers.cpp:51:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &p, &q);
   ~~~~~^~~~~~~~~~~~~~~~~
mergers.cpp:58:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &city[i]);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12032 KB Output is correct
2 Correct 12 ms 12032 KB Output is correct
3 Correct 11 ms 12160 KB Output is correct
4 Correct 14 ms 12160 KB Output is correct
5 Correct 11 ms 12236 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12032 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12032 KB Output is correct
10 Correct 12 ms 12160 KB Output is correct
11 Correct 12 ms 12160 KB Output is correct
12 Correct 12 ms 12160 KB Output is correct
13 Correct 12 ms 12132 KB Output is correct
14 Correct 12 ms 12160 KB Output is correct
15 Correct 13 ms 12160 KB Output is correct
16 Correct 11 ms 12160 KB Output is correct
17 Correct 11 ms 12160 KB Output is correct
18 Correct 11 ms 12160 KB Output is correct
19 Correct 11 ms 12032 KB Output is correct
20 Correct 12 ms 12132 KB Output is correct
21 Correct 13 ms 12160 KB Output is correct
22 Correct 11 ms 12160 KB Output is correct
23 Correct 11 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12032 KB Output is correct
2 Correct 12 ms 12032 KB Output is correct
3 Correct 11 ms 12160 KB Output is correct
4 Correct 14 ms 12160 KB Output is correct
5 Correct 11 ms 12236 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12032 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12032 KB Output is correct
10 Correct 12 ms 12160 KB Output is correct
11 Correct 12 ms 12160 KB Output is correct
12 Correct 12 ms 12160 KB Output is correct
13 Correct 12 ms 12132 KB Output is correct
14 Correct 12 ms 12160 KB Output is correct
15 Correct 13 ms 12160 KB Output is correct
16 Correct 11 ms 12160 KB Output is correct
17 Correct 11 ms 12160 KB Output is correct
18 Correct 11 ms 12160 KB Output is correct
19 Correct 11 ms 12032 KB Output is correct
20 Correct 12 ms 12132 KB Output is correct
21 Correct 13 ms 12160 KB Output is correct
22 Correct 11 ms 12160 KB Output is correct
23 Correct 11 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct
25 Correct 20 ms 12032 KB Output is correct
26 Correct 15 ms 12332 KB Output is correct
27 Correct 14 ms 12288 KB Output is correct
28 Correct 14 ms 12672 KB Output is correct
29 Correct 14 ms 12416 KB Output is correct
30 Correct 15 ms 12288 KB Output is correct
31 Correct 12 ms 12152 KB Output is correct
32 Correct 15 ms 12672 KB Output is correct
33 Correct 12 ms 12160 KB Output is correct
34 Correct 14 ms 12288 KB Output is correct
35 Correct 14 ms 12388 KB Output is correct
36 Correct 15 ms 12288 KB Output is correct
37 Correct 15 ms 12288 KB Output is correct
38 Correct 12 ms 12160 KB Output is correct
39 Correct 15 ms 12416 KB Output is correct
40 Correct 14 ms 12288 KB Output is correct
41 Correct 14 ms 12288 KB Output is correct
42 Correct 14 ms 12416 KB Output is correct
43 Correct 14 ms 12972 KB Output is correct
44 Correct 13 ms 12160 KB Output is correct
45 Correct 14 ms 12416 KB Output is correct
46 Correct 15 ms 12288 KB Output is correct
47 Correct 12 ms 12160 KB Output is correct
48 Correct 14 ms 12288 KB Output is correct
49 Correct 14 ms 12416 KB Output is correct
50 Correct 15 ms 12544 KB Output is correct
51 Correct 14 ms 12288 KB Output is correct
52 Correct 13 ms 12288 KB Output is correct
53 Correct 15 ms 12288 KB Output is correct
54 Correct 14 ms 12288 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12032 KB Output is correct
2 Correct 12 ms 12032 KB Output is correct
3 Correct 11 ms 12160 KB Output is correct
4 Correct 14 ms 12160 KB Output is correct
5 Correct 11 ms 12236 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12032 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12032 KB Output is correct
10 Correct 12 ms 12160 KB Output is correct
11 Correct 12 ms 12160 KB Output is correct
12 Correct 12 ms 12160 KB Output is correct
13 Correct 12 ms 12132 KB Output is correct
14 Correct 12 ms 12160 KB Output is correct
15 Correct 13 ms 12160 KB Output is correct
16 Correct 11 ms 12160 KB Output is correct
17 Correct 11 ms 12160 KB Output is correct
18 Correct 11 ms 12160 KB Output is correct
19 Correct 11 ms 12032 KB Output is correct
20 Correct 12 ms 12132 KB Output is correct
21 Correct 13 ms 12160 KB Output is correct
22 Correct 11 ms 12160 KB Output is correct
23 Correct 11 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct
25 Correct 12 ms 12160 KB Output is correct
26 Correct 85 ms 18604 KB Output is correct
27 Correct 142 ms 18512 KB Output is correct
28 Correct 14 ms 12416 KB Output is correct
29 Correct 12 ms 12032 KB Output is correct
30 Correct 11 ms 12160 KB Output is correct
31 Correct 116 ms 18680 KB Output is correct
32 Correct 13 ms 12288 KB Output is correct
33 Correct 138 ms 38580 KB Output is correct
34 Correct 136 ms 18296 KB Output is correct
35 Correct 14 ms 12288 KB Output is correct
36 Correct 134 ms 20728 KB Output is correct
37 Correct 14 ms 12288 KB Output is correct
38 Correct 14 ms 12288 KB Output is correct
39 Correct 101 ms 18688 KB Output is correct
40 Correct 14 ms 12928 KB Output is correct
41 Correct 128 ms 18272 KB Output is correct
42 Correct 137 ms 25080 KB Output is correct
43 Correct 12 ms 12160 KB Output is correct
44 Correct 143 ms 39416 KB Output is correct
45 Correct 137 ms 30072 KB Output is correct
46 Correct 13 ms 12288 KB Output is correct
47 Correct 14 ms 12288 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 89 ms 18672 KB Output is correct
2 Correct 102 ms 24532 KB Output is correct
3 Correct 15 ms 12388 KB Output is correct
4 Correct 14 ms 12416 KB Output is correct
5 Correct 12 ms 12160 KB Output is correct
6 Correct 11 ms 12160 KB Output is correct
7 Correct 13 ms 12288 KB Output is correct
8 Correct 153 ms 19704 KB Output is correct
9 Correct 14 ms 12288 KB Output is correct
10 Correct 122 ms 18936 KB Output is correct
11 Correct 13 ms 12160 KB Output is correct
12 Correct 134 ms 18956 KB Output is correct
13 Correct 137 ms 20088 KB Output is correct
14 Correct 121 ms 24224 KB Output is correct
15 Correct 88 ms 18544 KB Output is correct
16 Correct 15 ms 12416 KB Output is correct
17 Correct 15 ms 12152 KB Output is correct
18 Correct 112 ms 23524 KB Output is correct
19 Correct 152 ms 32888 KB Output is correct
20 Correct 15 ms 12416 KB Output is correct
21 Correct 11 ms 12032 KB Output is correct
22 Correct 121 ms 20340 KB Output is correct
23 Correct 14 ms 12288 KB Output is correct
24 Correct 173 ms 19320 KB Output is correct
25 Correct 145 ms 29944 KB Output is correct
26 Correct 14 ms 12416 KB Output is correct
27 Correct 15 ms 12544 KB Output is correct
28 Correct 14 ms 12288 KB Output is correct
29 Correct 14 ms 12288 KB Output is correct
30 Correct 16 ms 12384 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12032 KB Output is correct
2 Correct 12 ms 12032 KB Output is correct
3 Correct 11 ms 12160 KB Output is correct
4 Correct 14 ms 12160 KB Output is correct
5 Correct 11 ms 12236 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12032 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12032 KB Output is correct
10 Correct 12 ms 12160 KB Output is correct
11 Correct 12 ms 12160 KB Output is correct
12 Correct 12 ms 12160 KB Output is correct
13 Correct 12 ms 12132 KB Output is correct
14 Correct 12 ms 12160 KB Output is correct
15 Correct 13 ms 12160 KB Output is correct
16 Correct 11 ms 12160 KB Output is correct
17 Correct 11 ms 12160 KB Output is correct
18 Correct 11 ms 12160 KB Output is correct
19 Correct 11 ms 12032 KB Output is correct
20 Correct 12 ms 12132 KB Output is correct
21 Correct 13 ms 12160 KB Output is correct
22 Correct 11 ms 12160 KB Output is correct
23 Correct 11 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct
25 Correct 20 ms 12032 KB Output is correct
26 Correct 15 ms 12332 KB Output is correct
27 Correct 14 ms 12288 KB Output is correct
28 Correct 14 ms 12672 KB Output is correct
29 Correct 14 ms 12416 KB Output is correct
30 Correct 15 ms 12288 KB Output is correct
31 Correct 12 ms 12152 KB Output is correct
32 Correct 15 ms 12672 KB Output is correct
33 Correct 12 ms 12160 KB Output is correct
34 Correct 14 ms 12288 KB Output is correct
35 Correct 14 ms 12388 KB Output is correct
36 Correct 15 ms 12288 KB Output is correct
37 Correct 15 ms 12288 KB Output is correct
38 Correct 12 ms 12160 KB Output is correct
39 Correct 15 ms 12416 KB Output is correct
40 Correct 14 ms 12288 KB Output is correct
41 Correct 14 ms 12288 KB Output is correct
42 Correct 14 ms 12416 KB Output is correct
43 Correct 14 ms 12972 KB Output is correct
44 Correct 13 ms 12160 KB Output is correct
45 Correct 14 ms 12416 KB Output is correct
46 Correct 15 ms 12288 KB Output is correct
47 Correct 12 ms 12160 KB Output is correct
48 Correct 14 ms 12288 KB Output is correct
49 Correct 14 ms 12416 KB Output is correct
50 Correct 15 ms 12544 KB Output is correct
51 Correct 14 ms 12288 KB Output is correct
52 Correct 13 ms 12288 KB Output is correct
53 Correct 15 ms 12288 KB Output is correct
54 Correct 14 ms 12288 KB Output is correct
55 Correct 12 ms 12160 KB Output is correct
56 Correct 85 ms 18604 KB Output is correct
57 Correct 142 ms 18512 KB Output is correct
58 Correct 14 ms 12416 KB Output is correct
59 Correct 12 ms 12032 KB Output is correct
60 Correct 11 ms 12160 KB Output is correct
61 Correct 116 ms 18680 KB Output is correct
62 Correct 13 ms 12288 KB Output is correct
63 Correct 138 ms 38580 KB Output is correct
64 Correct 136 ms 18296 KB Output is correct
65 Correct 14 ms 12288 KB Output is correct
66 Correct 134 ms 20728 KB Output is correct
67 Correct 14 ms 12288 KB Output is correct
68 Correct 14 ms 12288 KB Output is correct
69 Correct 101 ms 18688 KB Output is correct
70 Correct 14 ms 12928 KB Output is correct
71 Correct 128 ms 18272 KB Output is correct
72 Correct 137 ms 25080 KB Output is correct
73 Correct 12 ms 12160 KB Output is correct
74 Correct 143 ms 39416 KB Output is correct
75 Correct 137 ms 30072 KB Output is correct
76 Correct 13 ms 12288 KB Output is correct
77 Correct 14 ms 12288 KB Output is correct
78 Correct 89 ms 18672 KB Output is correct
79 Correct 102 ms 24532 KB Output is correct
80 Correct 15 ms 12388 KB Output is correct
81 Correct 14 ms 12416 KB Output is correct
82 Correct 12 ms 12160 KB Output is correct
83 Correct 11 ms 12160 KB Output is correct
84 Correct 13 ms 12288 KB Output is correct
85 Correct 153 ms 19704 KB Output is correct
86 Correct 14 ms 12288 KB Output is correct
87 Correct 122 ms 18936 KB Output is correct
88 Correct 13 ms 12160 KB Output is correct
89 Correct 134 ms 18956 KB Output is correct
90 Correct 137 ms 20088 KB Output is correct
91 Correct 121 ms 24224 KB Output is correct
92 Correct 88 ms 18544 KB Output is correct
93 Correct 15 ms 12416 KB Output is correct
94 Correct 15 ms 12152 KB Output is correct
95 Correct 112 ms 23524 KB Output is correct
96 Correct 152 ms 32888 KB Output is correct
97 Correct 15 ms 12416 KB Output is correct
98 Correct 11 ms 12032 KB Output is correct
99 Correct 121 ms 20340 KB Output is correct
100 Correct 14 ms 12288 KB Output is correct
101 Correct 173 ms 19320 KB Output is correct
102 Correct 145 ms 29944 KB Output is correct
103 Correct 14 ms 12416 KB Output is correct
104 Correct 15 ms 12544 KB Output is correct
105 Correct 14 ms 12288 KB Output is correct
106 Correct 14 ms 12288 KB Output is correct
107 Correct 16 ms 12384 KB Output is correct
108 Correct 955 ms 55116 KB Output is correct
109 Correct 849 ms 95204 KB Output is correct
110 Correct 873 ms 126668 KB Output is correct
111 Correct 900 ms 123196 KB Output is correct
112 Correct 808 ms 92536 KB Output is correct
113 Correct 628 ms 70240 KB Output is correct
114 Correct 752 ms 43772 KB Output is correct
115 Correct 765 ms 43824 KB Output is correct
116 Correct 1118 ms 48908 KB Output is correct
117 Correct 829 ms 73556 KB Output is correct
118 Correct 780 ms 45708 KB Output is correct
119 Correct 793 ms 73528 KB Output is correct
120 Correct 872 ms 104988 KB Output is correct
121 Correct 846 ms 73380 KB Output is correct
122 Correct 1398 ms 57912 KB Output is correct
123 Correct 582 ms 74980 KB Output is correct
124 Correct 846 ms 64932 KB Output is correct