oj.uz

Submission #130468

# Submission time Handle Problem Language Result Execution time Memory
130468 2019-07-15T09:17:43 Z DodgeBallMan Mergers (JOI19_mergers) C++14
100 / 100
 878 ms 81204 KB 
#include <bits/stdc++.h>
#define pii pair<int, int>
#define x first 
#define y second 

using namespace std;

const int N = 5e5 + 10;

int par[N], dep[N], dsu[N], deg[N], n, k, cnt;
vector<int> g[N], co[N];
vector<pii> e;

void pre( int now, int p ) {
    par[now] = p, dep[now] = dep[p] + 1;
    for( int i : g[now] ) if( i != p ) pre( i, now );
}

int find( int now ) { return dsu[now] = dsu[now] == now ? now : find( dsu[now] ); }

int main()
{
    scanf("%d %d",&n,&k);
    e.reserve(n);
    for( int i = 1 ; i <= n ; i++ ) dsu[i] = i;
    for( int i = 1, u, v ; i <= n - 1 ; i++ ) {
        scanf("%d %d",&u,&v);
        g[u].emplace_back( v ), g[v].emplace_back( u );
        e.emplace_back( pii( u, v ) ); 
    }
    for( int i = 1, s ; i <= n ; i++ ) {
        scanf("%d",&s);
        co[s].emplace_back( i );
    }
    pre( 1, 0 );
    for( int i = 1 ; i <= k ; i++ ) if( co[i].size() > 1 ) {
        for( int j = 1 ; j < co[i].size() ; j++ ) {
            int a = find( co[i][j] ), b = find( co[i][j-1] );
            while( a != b ) {
                if( dep[a] < dep[b] ) swap( a, b );
                a = dsu[a] = find( par[a] );
            }
        }
    }
    for(auto &x : e) if(find(x.x) != find(x.y)) deg[find(x.x)]++, deg[find(x.y)]++;
    for( int i = 1 ; i <= n ; i++ ) if( deg[i] == 1 ) cnt++;
    printf("%d",( cnt + 1 ) / 2);
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:37:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for( int j = 1 ; j < co[i].size() ; j++ ) {
                          ~~^~~~~~~~~~~~~~
mergers.cpp:23:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&n,&k);
     ~~~~~^~~~~~~~~~~~~~~
mergers.cpp:27:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d",&u,&v);
         ~~~~~^~~~~~~~~~~~~~~
mergers.cpp:32:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&s);
         ~~~~~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23804 KB Output is correct
2 Correct 23 ms 23800 KB Output is correct
3 Correct 23 ms 23800 KB Output is correct
4 Correct 24 ms 23800 KB Output is correct
5 Correct 23 ms 23800 KB Output is correct
6 Correct 24 ms 23800 KB Output is correct
7 Correct 23 ms 23800 KB Output is correct
8 Correct 23 ms 23800 KB Output is correct
9 Correct 24 ms 23764 KB Output is correct
10 Correct 24 ms 23928 KB Output is correct
11 Correct 24 ms 23800 KB Output is correct
12 Correct 23 ms 23800 KB Output is correct
13 Correct 28 ms 23800 KB Output is correct
14 Correct 23 ms 23800 KB Output is correct
15 Correct 23 ms 23804 KB Output is correct
16 Correct 24 ms 23800 KB Output is correct
17 Correct 24 ms 23800 KB Output is correct
18 Correct 24 ms 23928 KB Output is correct
19 Correct 24 ms 23800 KB Output is correct
20 Correct 24 ms 23816 KB Output is correct
21 Correct 23 ms 23804 KB Output is correct
22 Correct 24 ms 23800 KB Output is correct
23 Correct 24 ms 23876 KB Output is correct
24 Correct 24 ms 23800 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23804 KB Output is correct
2 Correct 23 ms 23800 KB Output is correct
3 Correct 23 ms 23800 KB Output is correct
4 Correct 24 ms 23800 KB Output is correct
5 Correct 23 ms 23800 KB Output is correct
6 Correct 24 ms 23800 KB Output is correct
7 Correct 23 ms 23800 KB Output is correct
8 Correct 23 ms 23800 KB Output is correct
9 Correct 24 ms 23764 KB Output is correct
10 Correct 24 ms 23928 KB Output is correct
11 Correct 24 ms 23800 KB Output is correct
12 Correct 23 ms 23800 KB Output is correct
13 Correct 28 ms 23800 KB Output is correct
14 Correct 23 ms 23800 KB Output is correct
15 Correct 23 ms 23804 KB Output is correct
16 Correct 24 ms 23800 KB Output is correct
17 Correct 24 ms 23800 KB Output is correct
18 Correct 24 ms 23928 KB Output is correct
19 Correct 24 ms 23800 KB Output is correct
20 Correct 24 ms 23816 KB Output is correct
21 Correct 23 ms 23804 KB Output is correct
22 Correct 24 ms 23800 KB Output is correct
23 Correct 24 ms 23876 KB Output is correct
24 Correct 24 ms 23800 KB Output is correct
25 Correct 25 ms 23800 KB Output is correct
26 Correct 27 ms 24056 KB Output is correct
27 Correct 27 ms 24028 KB Output is correct
28 Correct 26 ms 24184 KB Output is correct
29 Correct 26 ms 24188 KB Output is correct
30 Correct 27 ms 24056 KB Output is correct
31 Correct 30 ms 23800 KB Output is correct
32 Correct 31 ms 24312 KB Output is correct
33 Correct 24 ms 23800 KB Output is correct
34 Correct 26 ms 24056 KB Output is correct
35 Correct 32 ms 24184 KB Output is correct
36 Correct 26 ms 24056 KB Output is correct
37 Correct 26 ms 24056 KB Output is correct
38 Correct 24 ms 23928 KB Output is correct
39 Correct 26 ms 24056 KB Output is correct
40 Correct 30 ms 24056 KB Output is correct
41 Correct 26 ms 24056 KB Output is correct
42 Correct 26 ms 24056 KB Output is correct
43 Correct 26 ms 24184 KB Output is correct
44 Correct 24 ms 23928 KB Output is correct
45 Correct 26 ms 24184 KB Output is correct
46 Correct 26 ms 24056 KB Output is correct
47 Correct 24 ms 23800 KB Output is correct
48 Correct 27 ms 24056 KB Output is correct
49 Correct 27 ms 24188 KB Output is correct
50 Correct 26 ms 24184 KB Output is correct
51 Correct 26 ms 24060 KB Output is correct
52 Correct 26 ms 24056 KB Output is correct
53 Correct 26 ms 24056 KB Output is correct
54 Correct 26 ms 24056 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23804 KB Output is correct
2 Correct 23 ms 23800 KB Output is correct
3 Correct 23 ms 23800 KB Output is correct
4 Correct 24 ms 23800 KB Output is correct
5 Correct 23 ms 23800 KB Output is correct
6 Correct 24 ms 23800 KB Output is correct
7 Correct 23 ms 23800 KB Output is correct
8 Correct 23 ms 23800 KB Output is correct
9 Correct 24 ms 23764 KB Output is correct
10 Correct 24 ms 23928 KB Output is correct
11 Correct 24 ms 23800 KB Output is correct
12 Correct 23 ms 23800 KB Output is correct
13 Correct 28 ms 23800 KB Output is correct
14 Correct 23 ms 23800 KB Output is correct
15 Correct 23 ms 23804 KB Output is correct
16 Correct 24 ms 23800 KB Output is correct
17 Correct 24 ms 23800 KB Output is correct
18 Correct 24 ms 23928 KB Output is correct
19 Correct 24 ms 23800 KB Output is correct
20 Correct 24 ms 23816 KB Output is correct
21 Correct 23 ms 23804 KB Output is correct
22 Correct 24 ms 23800 KB Output is correct
23 Correct 24 ms 23876 KB Output is correct
24 Correct 24 ms 23800 KB Output is correct
25 Correct 29 ms 23880 KB Output is correct
26 Correct 98 ms 30236 KB Output is correct
27 Correct 122 ms 29788 KB Output is correct
28 Correct 26 ms 24060 KB Output is correct
29 Correct 23 ms 23852 KB Output is correct
30 Correct 28 ms 23800 KB Output is correct
31 Correct 121 ms 29916 KB Output is correct
32 Correct 27 ms 24056 KB Output is correct
33 Correct 153 ms 34060 KB Output is correct
34 Correct 118 ms 29884 KB Output is correct
35 Correct 26 ms 24056 KB Output is correct
36 Correct 130 ms 30328 KB Output is correct
37 Correct 26 ms 24056 KB Output is correct
38 Correct 25 ms 24056 KB Output is correct
39 Correct 101 ms 30148 KB Output is correct
40 Correct 26 ms 24184 KB Output is correct
41 Correct 116 ms 29848 KB Output is correct
42 Correct 127 ms 31100 KB Output is correct
43 Correct 24 ms 23772 KB Output is correct
44 Correct 159 ms 34292 KB Output is correct
45 Correct 127 ms 31992 KB Output is correct
46 Correct 31 ms 24056 KB Output is correct
47 Correct 26 ms 24056 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 29808 KB Output is correct
2 Correct 141 ms 32840 KB Output is correct
3 Correct 26 ms 24060 KB Output is correct
4 Correct 31 ms 24056 KB Output is correct
5 Correct 24 ms 23804 KB Output is correct
6 Correct 29 ms 23772 KB Output is correct
7 Correct 26 ms 24056 KB Output is correct
8 Correct 138 ms 31308 KB Output is correct
9 Correct 26 ms 24032 KB Output is correct
10 Correct 119 ms 30176 KB Output is correct
11 Correct 24 ms 23800 KB Output is correct
12 Correct 129 ms 30300 KB Output is correct
13 Correct 139 ms 31164 KB Output is correct
14 Correct 134 ms 32828 KB Output is correct
15 Correct 92 ms 30068 KB Output is correct
16 Correct 26 ms 24056 KB Output is correct
17 Correct 24 ms 23892 KB Output is correct
18 Correct 110 ms 32724 KB Output is correct
19 Correct 146 ms 35188 KB Output is correct
20 Correct 26 ms 24056 KB Output is correct
21 Correct 29 ms 23800 KB Output is correct
22 Correct 111 ms 31648 KB Output is correct
23 Correct 26 ms 24056 KB Output is correct
24 Correct 140 ms 30456 KB Output is correct
25 Correct 153 ms 34344 KB Output is correct
26 Correct 26 ms 24184 KB Output is correct
27 Correct 27 ms 24184 KB Output is correct
28 Correct 26 ms 24056 KB Output is correct
29 Correct 26 ms 24056 KB Output is correct
30 Correct 26 ms 24056 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23804 KB Output is correct
2 Correct 23 ms 23800 KB Output is correct
3 Correct 23 ms 23800 KB Output is correct
4 Correct 24 ms 23800 KB Output is correct
5 Correct 23 ms 23800 KB Output is correct
6 Correct 24 ms 23800 KB Output is correct
7 Correct 23 ms 23800 KB Output is correct
8 Correct 23 ms 23800 KB Output is correct
9 Correct 24 ms 23764 KB Output is correct
10 Correct 24 ms 23928 KB Output is correct
11 Correct 24 ms 23800 KB Output is correct
12 Correct 23 ms 23800 KB Output is correct
13 Correct 28 ms 23800 KB Output is correct
14 Correct 23 ms 23800 KB Output is correct
15 Correct 23 ms 23804 KB Output is correct
16 Correct 24 ms 23800 KB Output is correct
17 Correct 24 ms 23800 KB Output is correct
18 Correct 24 ms 23928 KB Output is correct
19 Correct 24 ms 23800 KB Output is correct
20 Correct 24 ms 23816 KB Output is correct
21 Correct 23 ms 23804 KB Output is correct
22 Correct 24 ms 23800 KB Output is correct
23 Correct 24 ms 23876 KB Output is correct
24 Correct 24 ms 23800 KB Output is correct
25 Correct 25 ms 23800 KB Output is correct
26 Correct 27 ms 24056 KB Output is correct
27 Correct 27 ms 24028 KB Output is correct
28 Correct 26 ms 24184 KB Output is correct
29 Correct 26 ms 24188 KB Output is correct
30 Correct 27 ms 24056 KB Output is correct
31 Correct 30 ms 23800 KB Output is correct
32 Correct 31 ms 24312 KB Output is correct
33 Correct 24 ms 23800 KB Output is correct
34 Correct 26 ms 24056 KB Output is correct
35 Correct 32 ms 24184 KB Output is correct
36 Correct 26 ms 24056 KB Output is correct
37 Correct 26 ms 24056 KB Output is correct
38 Correct 24 ms 23928 KB Output is correct
39 Correct 26 ms 24056 KB Output is correct
40 Correct 30 ms 24056 KB Output is correct
41 Correct 26 ms 24056 KB Output is correct
42 Correct 26 ms 24056 KB Output is correct
43 Correct 26 ms 24184 KB Output is correct
44 Correct 24 ms 23928 KB Output is correct
45 Correct 26 ms 24184 KB Output is correct
46 Correct 26 ms 24056 KB Output is correct
47 Correct 24 ms 23800 KB Output is correct
48 Correct 27 ms 24056 KB Output is correct
49 Correct 27 ms 24188 KB Output is correct
50 Correct 26 ms 24184 KB Output is correct
51 Correct 26 ms 24060 KB Output is correct
52 Correct 26 ms 24056 KB Output is correct
53 Correct 26 ms 24056 KB Output is correct
54 Correct 26 ms 24056 KB Output is correct
55 Correct 29 ms 23880 KB Output is correct
56 Correct 98 ms 30236 KB Output is correct
57 Correct 122 ms 29788 KB Output is correct
58 Correct 26 ms 24060 KB Output is correct
59 Correct 23 ms 23852 KB Output is correct
60 Correct 28 ms 23800 KB Output is correct
61 Correct 121 ms 29916 KB Output is correct
62 Correct 27 ms 24056 KB Output is correct
63 Correct 153 ms 34060 KB Output is correct
64 Correct 118 ms 29884 KB Output is correct
65 Correct 26 ms 24056 KB Output is correct
66 Correct 130 ms 30328 KB Output is correct
67 Correct 26 ms 24056 KB Output is correct
68 Correct 25 ms 24056 KB Output is correct
69 Correct 101 ms 30148 KB Output is correct
70 Correct 26 ms 24184 KB Output is correct
71 Correct 116 ms 29848 KB Output is correct
72 Correct 127 ms 31100 KB Output is correct
73 Correct 24 ms 23772 KB Output is correct
74 Correct 159 ms 34292 KB Output is correct
75 Correct 127 ms 31992 KB Output is correct
76 Correct 31 ms 24056 KB Output is correct
77 Correct 26 ms 24056 KB Output is correct
78 Correct 92 ms 29808 KB Output is correct
79 Correct 141 ms 32840 KB Output is correct
80 Correct 26 ms 24060 KB Output is correct
81 Correct 31 ms 24056 KB Output is correct
82 Correct 24 ms 23804 KB Output is correct
83 Correct 29 ms 23772 KB Output is correct
84 Correct 26 ms 24056 KB Output is correct
85 Correct 138 ms 31308 KB Output is correct
86 Correct 26 ms 24032 KB Output is correct
87 Correct 119 ms 30176 KB Output is correct
88 Correct 24 ms 23800 KB Output is correct
89 Correct 129 ms 30300 KB Output is correct
90 Correct 139 ms 31164 KB Output is correct
91 Correct 134 ms 32828 KB Output is correct
92 Correct 92 ms 30068 KB Output is correct
93 Correct 26 ms 24056 KB Output is correct
94 Correct 24 ms 23892 KB Output is correct
95 Correct 110 ms 32724 KB Output is correct
96 Correct 146 ms 35188 KB Output is correct
97 Correct 26 ms 24056 KB Output is correct
98 Correct 29 ms 23800 KB Output is correct
99 Correct 111 ms 31648 KB Output is correct
100 Correct 26 ms 24056 KB Output is correct
101 Correct 140 ms 30456 KB Output is correct
102 Correct 153 ms 34344 KB Output is correct
103 Correct 26 ms 24184 KB Output is correct
104 Correct 27 ms 24184 KB Output is correct
105 Correct 26 ms 24056 KB Output is correct
106 Correct 26 ms 24056 KB Output is correct
107 Correct 26 ms 24056 KB Output is correct
108 Correct 610 ms 60008 KB Output is correct
109 Correct 742 ms 62748 KB Output is correct
110 Correct 754 ms 69688 KB Output is correct
111 Correct 851 ms 81204 KB Output is correct
112 Correct 878 ms 75576 KB Output is correct
113 Correct 748 ms 67492 KB Output is correct
114 Correct 646 ms 52268 KB Output is correct
115 Correct 653 ms 52328 KB Output is correct
116 Correct 812 ms 56684 KB Output is correct
117 Correct 767 ms 67704 KB Output is correct
118 Correct 759 ms 54156 KB Output is correct
119 Correct 779 ms 67544 KB Output is correct
120 Correct 797 ms 75772 KB Output is correct
121 Correct 788 ms 67620 KB Output is correct
122 Correct 841 ms 61288 KB Output is correct
123 Correct 584 ms 68944 KB Output is correct
124 Correct 822 ms 66296 KB Output is correct