oj.uz

Submission #130465

# Submission time Handle Problem Language Result Execution time Memory
130465 2019-07-15T09:13:51 Z DodgeBallMan Mergers (JOI19_mergers) C++14
100 / 100
 895 ms 91100 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);
    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 );
                dsu[a] = find( par[a] );
                a = dsu[a];
            }
        }
    }
    for( int i = 0 ; i < e.size() ; i++ ) {
        int a = find( e[i].x ), b = find( e[i].y );
        if( a != b ) deg[a]++, deg[b]++;
    } 
    for( int i = 1 ; i <= n ; i++ ) if( deg[i] == 1 ) cnt++;
    printf("%d",( cnt + 1 ) >> 1 );
    return 0;
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:36:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for( int j = 1 ; j < co[i].size() ; j++ ) {
                          ~~^~~~~~~~~~~~~~
mergers.cpp:45:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for( int i = 0 ; i < e.size() ; i++ ) {
                      ~~^~~~~~~~~~
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:26:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d",&u,&v);
         ~~~~~^~~~~~~~~~~~~~~
mergers.cpp:31:14: 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 23800 KB Output is correct
2 Correct 23 ms 23804 KB Output is correct
3 Correct 29 ms 23800 KB Output is correct
4 Correct 23 ms 23804 KB Output is correct
5 Correct 23 ms 23800 KB Output is correct
6 Correct 23 ms 23800 KB Output is correct
7 Correct 28 ms 23800 KB Output is correct
8 Correct 23 ms 23928 KB Output is correct
9 Correct 23 ms 23752 KB Output is correct
10 Correct 23 ms 23800 KB Output is correct
11 Correct 28 ms 23928 KB Output is correct
12 Correct 23 ms 23928 KB Output is correct
13 Correct 24 ms 23800 KB Output is correct
14 Correct 23 ms 23800 KB Output is correct
15 Correct 24 ms 23800 KB Output is correct
16 Correct 23 ms 23800 KB Output is correct
17 Correct 23 ms 23772 KB Output is correct
18 Correct 23 ms 23800 KB Output is correct
19 Correct 23 ms 23800 KB Output is correct
20 Correct 23 ms 23800 KB Output is correct
21 Correct 23 ms 23800 KB Output is correct
22 Correct 23 ms 23800 KB Output is correct
23 Correct 23 ms 23800 KB Output is correct
24 Correct 23 ms 23800 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23800 KB Output is correct
2 Correct 23 ms 23804 KB Output is correct
3 Correct 29 ms 23800 KB Output is correct
4 Correct 23 ms 23804 KB Output is correct
5 Correct 23 ms 23800 KB Output is correct
6 Correct 23 ms 23800 KB Output is correct
7 Correct 28 ms 23800 KB Output is correct
8 Correct 23 ms 23928 KB Output is correct
9 Correct 23 ms 23752 KB Output is correct
10 Correct 23 ms 23800 KB Output is correct
11 Correct 28 ms 23928 KB Output is correct
12 Correct 23 ms 23928 KB Output is correct
13 Correct 24 ms 23800 KB Output is correct
14 Correct 23 ms 23800 KB Output is correct
15 Correct 24 ms 23800 KB Output is correct
16 Correct 23 ms 23800 KB Output is correct
17 Correct 23 ms 23772 KB Output is correct
18 Correct 23 ms 23800 KB Output is correct
19 Correct 23 ms 23800 KB Output is correct
20 Correct 23 ms 23800 KB Output is correct
21 Correct 23 ms 23800 KB Output is correct
22 Correct 23 ms 23800 KB Output is correct
23 Correct 23 ms 23800 KB Output is correct
24 Correct 23 ms 23800 KB Output is correct
25 Correct 23 ms 23800 KB Output is correct
26 Correct 30 ms 24056 KB Output is correct
27 Correct 26 ms 24056 KB Output is correct
28 Correct 25 ms 24156 KB Output is correct
29 Correct 25 ms 24184 KB Output is correct
30 Correct 25 ms 24056 KB Output is correct
31 Correct 23 ms 23800 KB Output is correct
32 Correct 27 ms 24312 KB Output is correct
33 Correct 23 ms 23800 KB Output is correct
34 Correct 24 ms 24184 KB Output is correct
35 Correct 25 ms 24184 KB Output is correct
36 Correct 25 ms 24056 KB Output is correct
37 Correct 25 ms 24056 KB Output is correct
38 Correct 23 ms 23800 KB Output is correct
39 Correct 25 ms 24056 KB Output is correct
40 Correct 25 ms 24056 KB Output is correct
41 Correct 28 ms 24004 KB Output is correct
42 Correct 29 ms 24184 KB Output is correct
43 Correct 25 ms 24184 KB Output is correct
44 Correct 27 ms 23800 KB Output is correct
45 Correct 26 ms 24184 KB Output is correct
46 Correct 30 ms 24060 KB Output is correct
47 Correct 28 ms 23800 KB Output is correct
48 Correct 26 ms 24056 KB Output is correct
49 Correct 29 ms 24184 KB Output is correct
50 Correct 29 ms 24184 KB Output is correct
51 Correct 26 ms 24184 KB Output is correct
52 Correct 25 ms 24052 KB Output is correct
53 Correct 25 ms 24056 KB Output is correct
54 Correct 30 ms 24056 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23800 KB Output is correct
2 Correct 23 ms 23804 KB Output is correct
3 Correct 29 ms 23800 KB Output is correct
4 Correct 23 ms 23804 KB Output is correct
5 Correct 23 ms 23800 KB Output is correct
6 Correct 23 ms 23800 KB Output is correct
7 Correct 28 ms 23800 KB Output is correct
8 Correct 23 ms 23928 KB Output is correct
9 Correct 23 ms 23752 KB Output is correct
10 Correct 23 ms 23800 KB Output is correct
11 Correct 28 ms 23928 KB Output is correct
12 Correct 23 ms 23928 KB Output is correct
13 Correct 24 ms 23800 KB Output is correct
14 Correct 23 ms 23800 KB Output is correct
15 Correct 24 ms 23800 KB Output is correct
16 Correct 23 ms 23800 KB Output is correct
17 Correct 23 ms 23772 KB Output is correct
18 Correct 23 ms 23800 KB Output is correct
19 Correct 23 ms 23800 KB Output is correct
20 Correct 23 ms 23800 KB Output is correct
21 Correct 23 ms 23800 KB Output is correct
22 Correct 23 ms 23800 KB Output is correct
23 Correct 23 ms 23800 KB Output is correct
24 Correct 23 ms 23800 KB Output is correct
25 Correct 23 ms 23800 KB Output is correct
26 Correct 92 ms 31348 KB Output is correct
27 Correct 142 ms 30912 KB Output is correct
28 Correct 26 ms 24056 KB Output is correct
29 Correct 24 ms 23928 KB Output is correct
30 Correct 29 ms 23804 KB Output is correct
31 Correct 122 ms 31180 KB Output is correct
32 Correct 25 ms 24056 KB Output is correct
33 Correct 139 ms 35304 KB Output is correct
34 Correct 120 ms 30908 KB Output is correct
35 Correct 27 ms 24156 KB Output is correct
36 Correct 128 ms 31440 KB Output is correct
37 Correct 25 ms 24056 KB Output is correct
38 Correct 26 ms 24056 KB Output is correct
39 Correct 97 ms 31208 KB Output is correct
40 Correct 24 ms 24184 KB Output is correct
41 Correct 117 ms 31340 KB Output is correct
42 Correct 137 ms 32304 KB Output is correct
43 Correct 23 ms 23800 KB Output is correct
44 Correct 135 ms 35712 KB Output is correct
45 Correct 124 ms 33256 KB Output is correct
46 Correct 25 ms 24184 KB Output is correct
47 Correct 25 ms 24060 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 31328 KB Output is correct
2 Correct 114 ms 34648 KB Output is correct
3 Correct 26 ms 24056 KB Output is correct
4 Correct 25 ms 24056 KB Output is correct
5 Correct 23 ms 23800 KB Output is correct
6 Correct 23 ms 23800 KB Output is correct
7 Correct 25 ms 24184 KB Output is correct
8 Correct 143 ms 32748 KB Output is correct
9 Correct 25 ms 24184 KB Output is correct
10 Correct 143 ms 31620 KB Output is correct
11 Correct 23 ms 23928 KB Output is correct
12 Correct 135 ms 31592 KB Output is correct
13 Correct 143 ms 32620 KB Output is correct
14 Correct 136 ms 34368 KB Output is correct
15 Correct 100 ms 31340 KB Output is correct
16 Correct 25 ms 24184 KB Output is correct
17 Correct 23 ms 24056 KB Output is correct
18 Correct 129 ms 34288 KB Output is correct
19 Correct 141 ms 36600 KB Output is correct
20 Correct 26 ms 24056 KB Output is correct
21 Correct 28 ms 23800 KB Output is correct
22 Correct 113 ms 32948 KB Output is correct
23 Correct 25 ms 24060 KB Output is correct
24 Correct 159 ms 32004 KB Output is correct
25 Correct 140 ms 35792 KB Output is correct
26 Correct 27 ms 24156 KB Output is correct
27 Correct 25 ms 24184 KB Output is correct
28 Correct 26 ms 24060 KB Output is correct
29 Correct 26 ms 24056 KB Output is correct
30 Correct 25 ms 24184 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23800 KB Output is correct
2 Correct 23 ms 23804 KB Output is correct
3 Correct 29 ms 23800 KB Output is correct
4 Correct 23 ms 23804 KB Output is correct
5 Correct 23 ms 23800 KB Output is correct
6 Correct 23 ms 23800 KB Output is correct
7 Correct 28 ms 23800 KB Output is correct
8 Correct 23 ms 23928 KB Output is correct
9 Correct 23 ms 23752 KB Output is correct
10 Correct 23 ms 23800 KB Output is correct
11 Correct 28 ms 23928 KB Output is correct
12 Correct 23 ms 23928 KB Output is correct
13 Correct 24 ms 23800 KB Output is correct
14 Correct 23 ms 23800 KB Output is correct
15 Correct 24 ms 23800 KB Output is correct
16 Correct 23 ms 23800 KB Output is correct
17 Correct 23 ms 23772 KB Output is correct
18 Correct 23 ms 23800 KB Output is correct
19 Correct 23 ms 23800 KB Output is correct
20 Correct 23 ms 23800 KB Output is correct
21 Correct 23 ms 23800 KB Output is correct
22 Correct 23 ms 23800 KB Output is correct
23 Correct 23 ms 23800 KB Output is correct
24 Correct 23 ms 23800 KB Output is correct
25 Correct 23 ms 23800 KB Output is correct
26 Correct 30 ms 24056 KB Output is correct
27 Correct 26 ms 24056 KB Output is correct
28 Correct 25 ms 24156 KB Output is correct
29 Correct 25 ms 24184 KB Output is correct
30 Correct 25 ms 24056 KB Output is correct
31 Correct 23 ms 23800 KB Output is correct
32 Correct 27 ms 24312 KB Output is correct
33 Correct 23 ms 23800 KB Output is correct
34 Correct 24 ms 24184 KB Output is correct
35 Correct 25 ms 24184 KB Output is correct
36 Correct 25 ms 24056 KB Output is correct
37 Correct 25 ms 24056 KB Output is correct
38 Correct 23 ms 23800 KB Output is correct
39 Correct 25 ms 24056 KB Output is correct
40 Correct 25 ms 24056 KB Output is correct
41 Correct 28 ms 24004 KB Output is correct
42 Correct 29 ms 24184 KB Output is correct
43 Correct 25 ms 24184 KB Output is correct
44 Correct 27 ms 23800 KB Output is correct
45 Correct 26 ms 24184 KB Output is correct
46 Correct 30 ms 24060 KB Output is correct
47 Correct 28 ms 23800 KB Output is correct
48 Correct 26 ms 24056 KB Output is correct
49 Correct 29 ms 24184 KB Output is correct
50 Correct 29 ms 24184 KB Output is correct
51 Correct 26 ms 24184 KB Output is correct
52 Correct 25 ms 24052 KB Output is correct
53 Correct 25 ms 24056 KB Output is correct
54 Correct 30 ms 24056 KB Output is correct
55 Correct 23 ms 23800 KB Output is correct
56 Correct 92 ms 31348 KB Output is correct
57 Correct 142 ms 30912 KB Output is correct
58 Correct 26 ms 24056 KB Output is correct
59 Correct 24 ms 23928 KB Output is correct
60 Correct 29 ms 23804 KB Output is correct
61 Correct 122 ms 31180 KB Output is correct
62 Correct 25 ms 24056 KB Output is correct
63 Correct 139 ms 35304 KB Output is correct
64 Correct 120 ms 30908 KB Output is correct
65 Correct 27 ms 24156 KB Output is correct
66 Correct 128 ms 31440 KB Output is correct
67 Correct 25 ms 24056 KB Output is correct
68 Correct 26 ms 24056 KB Output is correct
69 Correct 97 ms 31208 KB Output is correct
70 Correct 24 ms 24184 KB Output is correct
71 Correct 117 ms 31340 KB Output is correct
72 Correct 137 ms 32304 KB Output is correct
73 Correct 23 ms 23800 KB Output is correct
74 Correct 135 ms 35712 KB Output is correct
75 Correct 124 ms 33256 KB Output is correct
76 Correct 25 ms 24184 KB Output is correct
77 Correct 25 ms 24060 KB Output is correct
78 Correct 94 ms 31328 KB Output is correct
79 Correct 114 ms 34648 KB Output is correct
80 Correct 26 ms 24056 KB Output is correct
81 Correct 25 ms 24056 KB Output is correct
82 Correct 23 ms 23800 KB Output is correct
83 Correct 23 ms 23800 KB Output is correct
84 Correct 25 ms 24184 KB Output is correct
85 Correct 143 ms 32748 KB Output is correct
86 Correct 25 ms 24184 KB Output is correct
87 Correct 143 ms 31620 KB Output is correct
88 Correct 23 ms 23928 KB Output is correct
89 Correct 135 ms 31592 KB Output is correct
90 Correct 143 ms 32620 KB Output is correct
91 Correct 136 ms 34368 KB Output is correct
92 Correct 100 ms 31340 KB Output is correct
93 Correct 25 ms 24184 KB Output is correct
94 Correct 23 ms 24056 KB Output is correct
95 Correct 129 ms 34288 KB Output is correct
96 Correct 141 ms 36600 KB Output is correct
97 Correct 26 ms 24056 KB Output is correct
98 Correct 28 ms 23800 KB Output is correct
99 Correct 113 ms 32948 KB Output is correct
100 Correct 25 ms 24060 KB Output is correct
101 Correct 159 ms 32004 KB Output is correct
102 Correct 140 ms 35792 KB Output is correct
103 Correct 27 ms 24156 KB Output is correct
104 Correct 25 ms 24184 KB Output is correct
105 Correct 26 ms 24060 KB Output is correct
106 Correct 26 ms 24056 KB Output is correct
107 Correct 25 ms 24184 KB Output is correct
108 Correct 682 ms 69560 KB Output is correct
109 Correct 767 ms 71888 KB Output is correct
110 Correct 772 ms 78812 KB Output is correct
111 Correct 895 ms 91100 KB Output is correct
112 Correct 852 ms 85160 KB Output is correct
113 Correct 886 ms 77524 KB Output is correct
114 Correct 707 ms 61020 KB Output is correct
115 Correct 698 ms 61460 KB Output is correct
116 Correct 892 ms 66012 KB Output is correct
117 Correct 821 ms 77452 KB Output is correct
118 Correct 676 ms 62192 KB Output is correct
119 Correct 872 ms 77400 KB Output is correct
120 Correct 823 ms 85592 KB Output is correct
121 Correct 895 ms 77360 KB Output is correct
122 Correct 873 ms 71056 KB Output is correct
123 Correct 584 ms 78828 KB Output is correct
124 Correct 849 ms 75900 KB Output is correct