oj.uz

Submission #210844

# Submission time Handle Problem Language Result Execution time Memory
210844 2020-03-18T19:53:31 Z brcode Mergers (JOI19_mergers) C++14
100 / 100
 1766 ms 91100 KB 
#include <iostream>
#include <vector>
using namespace std;
const int MAXN = 5e5+5;
int ans;
int leaves;
vector<int> col[MAXN];
vector<pair<int,int>> edges;
int depth[MAXN];
int dsu[MAXN];
int par[MAXN];
int cnt[MAXN];
vector<int> v1[MAXN];
int find(int curr){
    if(dsu[curr] == curr){
        return curr;
    }
    return dsu[curr] = find(dsu[curr]);
}
void dfs(int curr,int p,int d){
    
    par[curr] = p;
    dsu[curr] = curr;
    depth[curr] = d;
    for(int x:v1[curr]){
        if(x!=p){
            dfs(x,curr,d+1);
        }
    }
}
int main() {
    int n,m;
    cin>>n>>m;
    for(int i=1;i<n;i++){
        int x,y;
        cin>>x>>y;
        v1[x].push_back(y);
        v1[y].push_back(x);
        edges.push_back(make_pair(x,y));
    }
    for(int i=1;i<=n;i++){
        int c;
        cin>>c;
        col[c].push_back(i);
        
    }
    dfs(1,1,1);
    for(int i=1;i<=m;i++){
        for(int j=1;j<col[i].size();j++){
            int a = find(col[i][j-1]);
            int b = find(col[i][j]);
            
            while(a!=b){
                if(depth[a]<depth[b]){
                    swap(a,b);
                }
                
                dsu[a] = find(par[a]);
                a = dsu[a];
                //cout<<find(2)<<endl;
            }
            
        }
    }
    for(auto e:edges){
        int a = find(e.first);
        int b = find(e.second);
        
        if(a!=b){
            cnt[a]++;
            cnt[b]++;
        }
        
    }
    for(int i=1;i<=n;i++){
        if(cnt[i] == 1){
            leaves++;
        }
    }
   
    if(leaves == 1){
        cout<<0<<endl;
        return 0;
    }
    cout<<(leaves+1)/2<<endl;
    
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:49:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=1;j<col[i].size();j++){
                     ~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 25 ms 23800 KB Output is correct
3 Correct 25 ms 23800 KB Output is correct
4 Correct 23 ms 23800 KB Output is correct
5 Correct 25 ms 23800 KB Output is correct
6 Correct 26 ms 23928 KB Output is correct
7 Correct 23 ms 23800 KB Output is correct
8 Correct 26 ms 23804 KB Output is correct
9 Correct 26 ms 23828 KB Output is correct
10 Correct 24 ms 23800 KB Output is correct
11 Correct 25 ms 23800 KB Output is correct
12 Correct 25 ms 23800 KB Output is correct
13 Correct 24 ms 23800 KB Output is correct
14 Correct 24 ms 23800 KB Output is correct
15 Correct 25 ms 23800 KB Output is correct
16 Correct 26 ms 23928 KB Output is correct
17 Correct 24 ms 23800 KB Output is correct
18 Correct 25 ms 23928 KB Output is correct
19 Correct 23 ms 23800 KB Output is correct
20 Correct 26 ms 23800 KB Output is correct
21 Correct 25 ms 23928 KB Output is correct
22 Correct 23 ms 23800 KB Output is correct
23 Correct 26 ms 23772 KB Output is correct
24 Correct 25 ms 23928 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 25 ms 23800 KB Output is correct
3 Correct 25 ms 23800 KB Output is correct
4 Correct 23 ms 23800 KB Output is correct
5 Correct 25 ms 23800 KB Output is correct
6 Correct 26 ms 23928 KB Output is correct
7 Correct 23 ms 23800 KB Output is correct
8 Correct 26 ms 23804 KB Output is correct
9 Correct 26 ms 23828 KB Output is correct
10 Correct 24 ms 23800 KB Output is correct
11 Correct 25 ms 23800 KB Output is correct
12 Correct 25 ms 23800 KB Output is correct
13 Correct 24 ms 23800 KB Output is correct
14 Correct 24 ms 23800 KB Output is correct
15 Correct 25 ms 23800 KB Output is correct
16 Correct 26 ms 23928 KB Output is correct
17 Correct 24 ms 23800 KB Output is correct
18 Correct 25 ms 23928 KB Output is correct
19 Correct 23 ms 23800 KB Output is correct
20 Correct 26 ms 23800 KB Output is correct
21 Correct 25 ms 23928 KB Output is correct
22 Correct 23 ms 23800 KB Output is correct
23 Correct 26 ms 23772 KB Output is correct
24 Correct 25 ms 23928 KB Output is correct
25 Correct 25 ms 23928 KB Output is correct
26 Correct 30 ms 24184 KB Output is correct
27 Correct 29 ms 24028 KB Output is correct
28 Correct 32 ms 24184 KB Output is correct
29 Correct 30 ms 24184 KB Output is correct
30 Correct 29 ms 24028 KB Output is correct
31 Correct 27 ms 23844 KB Output is correct
32 Correct 31 ms 24284 KB Output is correct
33 Correct 26 ms 23800 KB Output is correct
34 Correct 32 ms 24056 KB Output is correct
35 Correct 31 ms 24068 KB Output is correct
36 Correct 30 ms 24084 KB Output is correct
37 Correct 31 ms 24056 KB Output is correct
38 Correct 25 ms 23928 KB Output is correct
39 Correct 29 ms 24056 KB Output is correct
40 Correct 30 ms 24056 KB Output is correct
41 Correct 31 ms 24056 KB Output is correct
42 Correct 29 ms 24184 KB Output is correct
43 Correct 29 ms 24184 KB Output is correct
44 Correct 24 ms 23800 KB Output is correct
45 Correct 29 ms 24188 KB Output is correct
46 Correct 30 ms 24060 KB Output is correct
47 Correct 25 ms 23772 KB Output is correct
48 Correct 29 ms 24104 KB Output is correct
49 Correct 29 ms 24212 KB Output is correct
50 Correct 32 ms 24184 KB Output is correct
51 Correct 30 ms 24056 KB Output is correct
52 Correct 30 ms 24072 KB Output is correct
53 Correct 29 ms 24056 KB Output is correct
54 Correct 28 ms 24056 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 25 ms 23800 KB Output is correct
3 Correct 25 ms 23800 KB Output is correct
4 Correct 23 ms 23800 KB Output is correct
5 Correct 25 ms 23800 KB Output is correct
6 Correct 26 ms 23928 KB Output is correct
7 Correct 23 ms 23800 KB Output is correct
8 Correct 26 ms 23804 KB Output is correct
9 Correct 26 ms 23828 KB Output is correct
10 Correct 24 ms 23800 KB Output is correct
11 Correct 25 ms 23800 KB Output is correct
12 Correct 25 ms 23800 KB Output is correct
13 Correct 24 ms 23800 KB Output is correct
14 Correct 24 ms 23800 KB Output is correct
15 Correct 25 ms 23800 KB Output is correct
16 Correct 26 ms 23928 KB Output is correct
17 Correct 24 ms 23800 KB Output is correct
18 Correct 25 ms 23928 KB Output is correct
19 Correct 23 ms 23800 KB Output is correct
20 Correct 26 ms 23800 KB Output is correct
21 Correct 25 ms 23928 KB Output is correct
22 Correct 23 ms 23800 KB Output is correct
23 Correct 26 ms 23772 KB Output is correct
24 Correct 25 ms 23928 KB Output is correct
25 Correct 25 ms 23800 KB Output is correct
26 Correct 212 ms 31532 KB Output is correct
27 Correct 235 ms 31180 KB Output is correct
28 Correct 29 ms 24056 KB Output is correct
29 Correct 25 ms 23800 KB Output is correct
30 Correct 25 ms 23800 KB Output is correct
31 Correct 225 ms 31180 KB Output is correct
32 Correct 29 ms 24056 KB Output is correct
33 Correct 253 ms 35444 KB Output is correct
34 Correct 228 ms 31084 KB Output is correct
35 Correct 30 ms 24060 KB Output is correct
36 Correct 252 ms 31664 KB Output is correct
37 Correct 29 ms 24056 KB Output is correct
38 Correct 30 ms 24056 KB Output is correct
39 Correct 206 ms 31336 KB Output is correct
40 Correct 28 ms 24188 KB Output is correct
41 Correct 224 ms 31340 KB Output is correct
42 Correct 254 ms 32608 KB Output is correct
43 Correct 27 ms 23800 KB Output is correct
44 Correct 238 ms 35820 KB Output is correct
45 Correct 253 ms 33388 KB Output is correct
46 Correct 29 ms 24056 KB Output is correct
47 Correct 28 ms 24056 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 208 ms 31332 KB Output is correct
2 Correct 248 ms 34720 KB Output is correct
3 Correct 31 ms 24060 KB Output is correct
4 Correct 29 ms 24084 KB Output is correct
5 Correct 24 ms 23800 KB Output is correct
6 Correct 25 ms 23800 KB Output is correct
7 Correct 31 ms 24056 KB Output is correct
8 Correct 263 ms 32816 KB Output is correct
9 Correct 28 ms 24056 KB Output is correct
10 Correct 249 ms 31652 KB Output is correct
11 Correct 24 ms 23800 KB Output is correct
12 Correct 244 ms 31468 KB Output is correct
13 Correct 270 ms 32756 KB Output is correct
14 Correct 256 ms 34284 KB Output is correct
15 Correct 201 ms 31268 KB Output is correct
16 Correct 30 ms 24056 KB Output is correct
17 Correct 25 ms 23800 KB Output is correct
18 Correct 236 ms 34324 KB Output is correct
19 Correct 279 ms 36828 KB Output is correct
20 Correct 31 ms 24056 KB Output is correct
21 Correct 24 ms 23828 KB Output is correct
22 Correct 231 ms 32980 KB Output is correct
23 Correct 30 ms 24056 KB Output is correct
24 Correct 254 ms 31848 KB Output is correct
25 Correct 264 ms 35832 KB Output is correct
26 Correct 30 ms 24184 KB Output is correct
27 Correct 29 ms 24184 KB Output is correct
28 Correct 29 ms 24056 KB Output is correct
29 Correct 30 ms 24084 KB Output is correct
30 Correct 30 ms 24084 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 25 ms 23800 KB Output is correct
3 Correct 25 ms 23800 KB Output is correct
4 Correct 23 ms 23800 KB Output is correct
5 Correct 25 ms 23800 KB Output is correct
6 Correct 26 ms 23928 KB Output is correct
7 Correct 23 ms 23800 KB Output is correct
8 Correct 26 ms 23804 KB Output is correct
9 Correct 26 ms 23828 KB Output is correct
10 Correct 24 ms 23800 KB Output is correct
11 Correct 25 ms 23800 KB Output is correct
12 Correct 25 ms 23800 KB Output is correct
13 Correct 24 ms 23800 KB Output is correct
14 Correct 24 ms 23800 KB Output is correct
15 Correct 25 ms 23800 KB Output is correct
16 Correct 26 ms 23928 KB Output is correct
17 Correct 24 ms 23800 KB Output is correct
18 Correct 25 ms 23928 KB Output is correct
19 Correct 23 ms 23800 KB Output is correct
20 Correct 26 ms 23800 KB Output is correct
21 Correct 25 ms 23928 KB Output is correct
22 Correct 23 ms 23800 KB Output is correct
23 Correct 26 ms 23772 KB Output is correct
24 Correct 25 ms 23928 KB Output is correct
25 Correct 25 ms 23928 KB Output is correct
26 Correct 30 ms 24184 KB Output is correct
27 Correct 29 ms 24028 KB Output is correct
28 Correct 32 ms 24184 KB Output is correct
29 Correct 30 ms 24184 KB Output is correct
30 Correct 29 ms 24028 KB Output is correct
31 Correct 27 ms 23844 KB Output is correct
32 Correct 31 ms 24284 KB Output is correct
33 Correct 26 ms 23800 KB Output is correct
34 Correct 32 ms 24056 KB Output is correct
35 Correct 31 ms 24068 KB Output is correct
36 Correct 30 ms 24084 KB Output is correct
37 Correct 31 ms 24056 KB Output is correct
38 Correct 25 ms 23928 KB Output is correct
39 Correct 29 ms 24056 KB Output is correct
40 Correct 30 ms 24056 KB Output is correct
41 Correct 31 ms 24056 KB Output is correct
42 Correct 29 ms 24184 KB Output is correct
43 Correct 29 ms 24184 KB Output is correct
44 Correct 24 ms 23800 KB Output is correct
45 Correct 29 ms 24188 KB Output is correct
46 Correct 30 ms 24060 KB Output is correct
47 Correct 25 ms 23772 KB Output is correct
48 Correct 29 ms 24104 KB Output is correct
49 Correct 29 ms 24212 KB Output is correct
50 Correct 32 ms 24184 KB Output is correct
51 Correct 30 ms 24056 KB Output is correct
52 Correct 30 ms 24072 KB Output is correct
53 Correct 29 ms 24056 KB Output is correct
54 Correct 28 ms 24056 KB Output is correct
55 Correct 25 ms 23800 KB Output is correct
56 Correct 212 ms 31532 KB Output is correct
57 Correct 235 ms 31180 KB Output is correct
58 Correct 29 ms 24056 KB Output is correct
59 Correct 25 ms 23800 KB Output is correct
60 Correct 25 ms 23800 KB Output is correct
61 Correct 225 ms 31180 KB Output is correct
62 Correct 29 ms 24056 KB Output is correct
63 Correct 253 ms 35444 KB Output is correct
64 Correct 228 ms 31084 KB Output is correct
65 Correct 30 ms 24060 KB Output is correct
66 Correct 252 ms 31664 KB Output is correct
67 Correct 29 ms 24056 KB Output is correct
68 Correct 30 ms 24056 KB Output is correct
69 Correct 206 ms 31336 KB Output is correct
70 Correct 28 ms 24188 KB Output is correct
71 Correct 224 ms 31340 KB Output is correct
72 Correct 254 ms 32608 KB Output is correct
73 Correct 27 ms 23800 KB Output is correct
74 Correct 238 ms 35820 KB Output is correct
75 Correct 253 ms 33388 KB Output is correct
76 Correct 29 ms 24056 KB Output is correct
77 Correct 28 ms 24056 KB Output is correct
78 Correct 208 ms 31332 KB Output is correct
79 Correct 248 ms 34720 KB Output is correct
80 Correct 31 ms 24060 KB Output is correct
81 Correct 29 ms 24084 KB Output is correct
82 Correct 24 ms 23800 KB Output is correct
83 Correct 25 ms 23800 KB Output is correct
84 Correct 31 ms 24056 KB Output is correct
85 Correct 263 ms 32816 KB Output is correct
86 Correct 28 ms 24056 KB Output is correct
87 Correct 249 ms 31652 KB Output is correct
88 Correct 24 ms 23800 KB Output is correct
89 Correct 244 ms 31468 KB Output is correct
90 Correct 270 ms 32756 KB Output is correct
91 Correct 256 ms 34284 KB Output is correct
92 Correct 201 ms 31268 KB Output is correct
93 Correct 30 ms 24056 KB Output is correct
94 Correct 25 ms 23800 KB Output is correct
95 Correct 236 ms 34324 KB Output is correct
96 Correct 279 ms 36828 KB Output is correct
97 Correct 31 ms 24056 KB Output is correct
98 Correct 24 ms 23828 KB Output is correct
99 Correct 231 ms 32980 KB Output is correct
100 Correct 30 ms 24056 KB Output is correct
101 Correct 254 ms 31848 KB Output is correct
102 Correct 264 ms 35832 KB Output is correct
103 Correct 30 ms 24184 KB Output is correct
104 Correct 29 ms 24184 KB Output is correct
105 Correct 29 ms 24056 KB Output is correct
106 Correct 30 ms 24084 KB Output is correct
107 Correct 30 ms 24084 KB Output is correct
108 Correct 1414 ms 69740 KB Output is correct
109 Correct 1538 ms 71852 KB Output is correct
110 Correct 1542 ms 78940 KB Output is correct
111 Correct 1766 ms 91100 KB Output is correct
112 Correct 1731 ms 85392 KB Output is correct
113 Correct 1436 ms 77628 KB Output is correct
114 Correct 1386 ms 61172 KB Output is correct
115 Correct 1373 ms 61676 KB Output is correct
116 Correct 1624 ms 66148 KB Output is correct
117 Correct 1664 ms 77532 KB Output is correct
118 Correct 1473 ms 62556 KB Output is correct
119 Correct 1681 ms 77680 KB Output is correct
120 Correct 1707 ms 85804 KB Output is correct
121 Correct 1646 ms 77612 KB Output is correct
122 Correct 1716 ms 71172 KB Output is correct
123 Correct 1361 ms 79056 KB Output is correct
124 Correct 1737 ms 76292 KB Output is correct