oj.uz

Submission #716273

# Submission time Handle Problem Language Result Execution time Memory
716273 2023-03-29T12:52:55 Z Ahmed57 Mergers (JOI19_mergers) C++14
70 / 100
 82 ms 30672 KB 
#include <bits/stdc++.h>

using namespace std;
vector<int> adj[300001];
int dep[300001] , par[300001];
//DSU
int pr[300001];
int gs[300001];

int findleader(int x){
    if(pr[x]==x){
        return x;
    }
    return pr[x] = findleader(pr[x]);
}
void mergegroup(int x,int y){
    int led1 = findleader(x);
    int led2 = findleader(y);
    if(led1==led2)return;
    if(gs[led1]>gs[led2]){
        pr[led2]=led1;
        gs[led1]+=gs[led2];
    }else{
        pr[led1]=led2;
        gs[led2]+=gs[led1];
    }
}
void merge(int a,int b){
    while(a!=b){
        if(dep[a] < dep[b])swap(a, b);
        pr[a]=findleader(par[a]);
        a = pr[a];
    }
}
void dfs(int i ,int prr){
    par[i] = prr;
    dep[i] = dep[prr]+1;
    for(auto j:adj[i]){
        if(j!=prr)dfs(j,i);
    }
}
signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    int n,k;
    cin>>n>>k;
    for(int i = 0;i<=n;i++){
        gs[i] = 1, pr[i] = i;
    }
    vector<int> col[k+1];
    for(int i = 0;i<n-1;i++){
        int a,b;
        cin>>a>>b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    dfs(1,0);
    for(int i = 1;i<=n;i++){
        int x;cin>>x;
        col[x].push_back(i);
    }
    for(int i = 1;i<=k;i++){
        for(int j = 1;j<col[i].size();j++){
            merge(col[i][0],col[i][j]);
        }
    }
    int deg[n+1] = {0};
    for(int i = 1;i<=n;i++){
        for(auto j:adj[i]){
            if(findleader(i)!=findleader(j)){
                deg[findleader(i)]++;deg[findleader(j)]++;
            }
        }
    }
    int cnt = 0;
    for(int i = 1;i<=n;i++){
        if(deg[i]==2){
            cnt++;
        }
    }
    cout<<(cnt+1)/2<<"\n";
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:62:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |         for(int j = 1;j<col[i].size();j++){
      |                       ~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 3 ms 7380 KB Output is correct
3 Correct 3 ms 7380 KB Output is correct
4 Correct 3 ms 7380 KB Output is correct
5 Correct 3 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 3 ms 7380 KB Output is correct
9 Correct 3 ms 7380 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 4 ms 7380 KB Output is correct
12 Correct 4 ms 7380 KB Output is correct
13 Correct 4 ms 7380 KB Output is correct
14 Correct 3 ms 7380 KB Output is correct
15 Correct 4 ms 7380 KB Output is correct
16 Correct 3 ms 7380 KB Output is correct
17 Correct 4 ms 7380 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 3 ms 7380 KB Output is correct
21 Correct 4 ms 7380 KB Output is correct
22 Correct 4 ms 7396 KB Output is correct
23 Correct 4 ms 7380 KB Output is correct
24 Correct 4 ms 7380 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 3 ms 7380 KB Output is correct
3 Correct 3 ms 7380 KB Output is correct
4 Correct 3 ms 7380 KB Output is correct
5 Correct 3 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 3 ms 7380 KB Output is correct
9 Correct 3 ms 7380 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 4 ms 7380 KB Output is correct
12 Correct 4 ms 7380 KB Output is correct
13 Correct 4 ms 7380 KB Output is correct
14 Correct 3 ms 7380 KB Output is correct
15 Correct 4 ms 7380 KB Output is correct
16 Correct 3 ms 7380 KB Output is correct
17 Correct 4 ms 7380 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 3 ms 7380 KB Output is correct
21 Correct 4 ms 7380 KB Output is correct
22 Correct 4 ms 7396 KB Output is correct
23 Correct 4 ms 7380 KB Output is correct
24 Correct 4 ms 7380 KB Output is correct
25 Correct 4 ms 7380 KB Output is correct
26 Correct 5 ms 7640 KB Output is correct
27 Correct 5 ms 7508 KB Output is correct
28 Correct 5 ms 7636 KB Output is correct
29 Correct 6 ms 7636 KB Output is correct
30 Correct 5 ms 7508 KB Output is correct
31 Correct 4 ms 7380 KB Output is correct
32 Correct 5 ms 7764 KB Output is correct
33 Correct 4 ms 7380 KB Output is correct
34 Correct 5 ms 7508 KB Output is correct
35 Correct 5 ms 7636 KB Output is correct
36 Correct 5 ms 7508 KB Output is correct
37 Correct 5 ms 7508 KB Output is correct
38 Correct 4 ms 7380 KB Output is correct
39 Correct 6 ms 7508 KB Output is correct
40 Correct 5 ms 7508 KB Output is correct
41 Correct 5 ms 7508 KB Output is correct
42 Correct 5 ms 7636 KB Output is correct
43 Correct 5 ms 7680 KB Output is correct
44 Correct 4 ms 7380 KB Output is correct
45 Correct 5 ms 7636 KB Output is correct
46 Correct 5 ms 7616 KB Output is correct
47 Correct 4 ms 7380 KB Output is correct
48 Correct 7 ms 7508 KB Output is correct
49 Correct 5 ms 7636 KB Output is correct
50 Correct 6 ms 7636 KB Output is correct
51 Correct 5 ms 7508 KB Output is correct
52 Correct 5 ms 7508 KB Output is correct
53 Correct 5 ms 7636 KB Output is correct
54 Correct 5 ms 7508 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 3 ms 7380 KB Output is correct
3 Correct 3 ms 7380 KB Output is correct
4 Correct 3 ms 7380 KB Output is correct
5 Correct 3 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 3 ms 7380 KB Output is correct
9 Correct 3 ms 7380 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 4 ms 7380 KB Output is correct
12 Correct 4 ms 7380 KB Output is correct
13 Correct 4 ms 7380 KB Output is correct
14 Correct 3 ms 7380 KB Output is correct
15 Correct 4 ms 7380 KB Output is correct
16 Correct 3 ms 7380 KB Output is correct
17 Correct 4 ms 7380 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 3 ms 7380 KB Output is correct
21 Correct 4 ms 7380 KB Output is correct
22 Correct 4 ms 7396 KB Output is correct
23 Correct 4 ms 7380 KB Output is correct
24 Correct 4 ms 7380 KB Output is correct
25 Correct 4 ms 7388 KB Output is correct
26 Correct 42 ms 13396 KB Output is correct
27 Correct 60 ms 13016 KB Output is correct
28 Correct 6 ms 7508 KB Output is correct
29 Correct 4 ms 7380 KB Output is correct
30 Correct 4 ms 7380 KB Output is correct
31 Correct 61 ms 13052 KB Output is correct
32 Correct 5 ms 7508 KB Output is correct
33 Correct 65 ms 16892 KB Output is correct
34 Correct 58 ms 13016 KB Output is correct
35 Correct 5 ms 7508 KB Output is correct
36 Correct 61 ms 13036 KB Output is correct
37 Correct 5 ms 7576 KB Output is correct
38 Correct 5 ms 7508 KB Output is correct
39 Correct 45 ms 13396 KB Output is correct
40 Correct 5 ms 7636 KB Output is correct
41 Correct 49 ms 12996 KB Output is correct
42 Correct 54 ms 14028 KB Output is correct
43 Correct 4 ms 7380 KB Output is correct
44 Correct 60 ms 17184 KB Output is correct
45 Correct 54 ms 14856 KB Output is correct
46 Correct 7 ms 7508 KB Output is correct
47 Correct 5 ms 7456 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 13360 KB Output is correct
2 Correct 51 ms 18244 KB Output is correct
3 Correct 5 ms 7636 KB Output is correct
4 Correct 5 ms 7508 KB Output is correct
5 Correct 4 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 5 ms 7508 KB Output is correct
8 Correct 69 ms 15236 KB Output is correct
9 Correct 5 ms 7508 KB Output is correct
10 Correct 74 ms 13084 KB Output is correct
11 Correct 4 ms 7380 KB Output is correct
12 Correct 58 ms 13064 KB Output is correct
13 Correct 64 ms 15128 KB Output is correct
14 Correct 82 ms 18020 KB Output is correct
15 Correct 51 ms 13456 KB Output is correct
16 Correct 5 ms 7636 KB Output is correct
17 Correct 4 ms 7380 KB Output is correct
18 Correct 62 ms 17760 KB Output is correct
19 Correct 70 ms 19964 KB Output is correct
20 Correct 5 ms 7508 KB Output is correct
21 Correct 4 ms 7380 KB Output is correct
22 Correct 60 ms 15572 KB Output is correct
23 Correct 5 ms 7508 KB Output is correct
24 Correct 78 ms 13604 KB Output is correct
25 Correct 72 ms 19152 KB Output is correct
26 Correct 5 ms 7636 KB Output is correct
27 Correct 5 ms 7732 KB Output is correct
28 Correct 5 ms 7508 KB Output is correct
29 Correct 5 ms 7508 KB Output is correct
30 Correct 5 ms 7636 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 3 ms 7380 KB Output is correct
3 Correct 3 ms 7380 KB Output is correct
4 Correct 3 ms 7380 KB Output is correct
5 Correct 3 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 3 ms 7380 KB Output is correct
9 Correct 3 ms 7380 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 4 ms 7380 KB Output is correct
12 Correct 4 ms 7380 KB Output is correct
13 Correct 4 ms 7380 KB Output is correct
14 Correct 3 ms 7380 KB Output is correct
15 Correct 4 ms 7380 KB Output is correct
16 Correct 3 ms 7380 KB Output is correct
17 Correct 4 ms 7380 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 3 ms 7380 KB Output is correct
21 Correct 4 ms 7380 KB Output is correct
22 Correct 4 ms 7396 KB Output is correct
23 Correct 4 ms 7380 KB Output is correct
24 Correct 4 ms 7380 KB Output is correct
25 Correct 4 ms 7380 KB Output is correct
26 Correct 5 ms 7640 KB Output is correct
27 Correct 5 ms 7508 KB Output is correct
28 Correct 5 ms 7636 KB Output is correct
29 Correct 6 ms 7636 KB Output is correct
30 Correct 5 ms 7508 KB Output is correct
31 Correct 4 ms 7380 KB Output is correct
32 Correct 5 ms 7764 KB Output is correct
33 Correct 4 ms 7380 KB Output is correct
34 Correct 5 ms 7508 KB Output is correct
35 Correct 5 ms 7636 KB Output is correct
36 Correct 5 ms 7508 KB Output is correct
37 Correct 5 ms 7508 KB Output is correct
38 Correct 4 ms 7380 KB Output is correct
39 Correct 6 ms 7508 KB Output is correct
40 Correct 5 ms 7508 KB Output is correct
41 Correct 5 ms 7508 KB Output is correct
42 Correct 5 ms 7636 KB Output is correct
43 Correct 5 ms 7680 KB Output is correct
44 Correct 4 ms 7380 KB Output is correct
45 Correct 5 ms 7636 KB Output is correct
46 Correct 5 ms 7616 KB Output is correct
47 Correct 4 ms 7380 KB Output is correct
48 Correct 7 ms 7508 KB Output is correct
49 Correct 5 ms 7636 KB Output is correct
50 Correct 6 ms 7636 KB Output is correct
51 Correct 5 ms 7508 KB Output is correct
52 Correct 5 ms 7508 KB Output is correct
53 Correct 5 ms 7636 KB Output is correct
54 Correct 5 ms 7508 KB Output is correct
55 Correct 4 ms 7388 KB Output is correct
56 Correct 42 ms 13396 KB Output is correct
57 Correct 60 ms 13016 KB Output is correct
58 Correct 6 ms 7508 KB Output is correct
59 Correct 4 ms 7380 KB Output is correct
60 Correct 4 ms 7380 KB Output is correct
61 Correct 61 ms 13052 KB Output is correct
62 Correct 5 ms 7508 KB Output is correct
63 Correct 65 ms 16892 KB Output is correct
64 Correct 58 ms 13016 KB Output is correct
65 Correct 5 ms 7508 KB Output is correct
66 Correct 61 ms 13036 KB Output is correct
67 Correct 5 ms 7576 KB Output is correct
68 Correct 5 ms 7508 KB Output is correct
69 Correct 45 ms 13396 KB Output is correct
70 Correct 5 ms 7636 KB Output is correct
71 Correct 49 ms 12996 KB Output is correct
72 Correct 54 ms 14028 KB Output is correct
73 Correct 4 ms 7380 KB Output is correct
74 Correct 60 ms 17184 KB Output is correct
75 Correct 54 ms 14856 KB Output is correct
76 Correct 7 ms 7508 KB Output is correct
77 Correct 5 ms 7456 KB Output is correct
78 Correct 39 ms 13360 KB Output is correct
79 Correct 51 ms 18244 KB Output is correct
80 Correct 5 ms 7636 KB Output is correct
81 Correct 5 ms 7508 KB Output is correct
82 Correct 4 ms 7380 KB Output is correct
83 Correct 4 ms 7380 KB Output is correct
84 Correct 5 ms 7508 KB Output is correct
85 Correct 69 ms 15236 KB Output is correct
86 Correct 5 ms 7508 KB Output is correct
87 Correct 74 ms 13084 KB Output is correct
88 Correct 4 ms 7380 KB Output is correct
89 Correct 58 ms 13064 KB Output is correct
90 Correct 64 ms 15128 KB Output is correct
91 Correct 82 ms 18020 KB Output is correct
92 Correct 51 ms 13456 KB Output is correct
93 Correct 5 ms 7636 KB Output is correct
94 Correct 4 ms 7380 KB Output is correct
95 Correct 62 ms 17760 KB Output is correct
96 Correct 70 ms 19964 KB Output is correct
97 Correct 5 ms 7508 KB Output is correct
98 Correct 4 ms 7380 KB Output is correct
99 Correct 60 ms 15572 KB Output is correct
100 Correct 5 ms 7508 KB Output is correct
101 Correct 78 ms 13604 KB Output is correct
102 Correct 72 ms 19152 KB Output is correct
103 Correct 5 ms 7636 KB Output is correct
104 Correct 5 ms 7732 KB Output is correct
105 Correct 5 ms 7508 KB Output is correct
106 Correct 5 ms 7508 KB Output is correct
107 Correct 5 ms 7636 KB Output is correct
108 Runtime error 20 ms 30672 KB Execution killed with signal 11
109 Halted 0 ms 0 KB -