oj.uz

Submission #1095182

# Submission time Handle Problem Language Result Execution time Memory
1095182 2024-10-01T13:35:08 Z pokmui9909 Mergers (JOI19_mergers) C++17
100 / 100
 372 ms 94952 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
 
#define x first
#define y second
 
ll N, K, A[500005], D[500005], P[500005];
vector<ll> T[500005];
 
struct UnionFind{
    ll p[500005];
    ll Find(ll n) { return (p[n] < 0 ? n : p[n] = Find(p[n])); }
    void Union(ll u, ll v) { u = Find(u), v = Find(v); if(u != v) p[u] += p[v], p[v] = u; }
}uf;
 
void dfs(ll u, ll p){
    P[u] = p;
    for(auto v : T[u]){
        if(v == p) continue;
        D[v] = D[u] + 1;
        dfs(v, u);
    }
}
void Comp(ll u, ll v){
    u = uf.Find(u), v = uf.Find(v);
    while(u != v){
        if(D[u] < D[v]) swap(u, v);
        uf.Union(P[u], u);
        u = uf.Find(u);
    }
}
 
vector<ll> S[500005];
ll deg[500005];
 
int main(){
    cin.tie(0) -> sync_with_stdio(0);
 
    cin >> N >> K;
    fill(uf.p, uf.p + N + 1, -1LL);
    for(ll i = 1; i < N; i++){
        ll u, v; cin >> u >> v;
        T[u].push_back(v); T[v].push_back(u);
    }
    dfs(1, -1);
    for(ll i = 1; i <= N; i++){
        ll v; cin >> v;
        S[v].push_back(i);
    }
    for(ll i = 1; i <= K; i++){
        for(ll j = 1; j < S[i].size(); j++){
            Comp(S[i][0], S[i][j]);
        }
    }
    for(ll i = 1; i <= N; i++){
        for(auto j : T[i]){
            if(i > j) continue;
            ll u = uf.Find(i), v = uf.Find(j);
            if(u != v){
                deg[u]++, deg[v]++;
            }
        }
    }
    ll Cnt = 0;
    for(ll i = 1; i <= N; i++){
        if(deg[i] == 1) Cnt++;
    }
    cout << (Cnt + 1) / 2;
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:52:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |         for(ll j = 1; j < S[i].size(); j++){
      |                       ~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23900 KB Output is correct
2 Correct 10 ms 23900 KB Output is correct
3 Correct 10 ms 23948 KB Output is correct
4 Correct 10 ms 23900 KB Output is correct
5 Correct 10 ms 23900 KB Output is correct
6 Correct 10 ms 23900 KB Output is correct
7 Correct 10 ms 23896 KB Output is correct
8 Correct 10 ms 23896 KB Output is correct
9 Correct 9 ms 23896 KB Output is correct
10 Correct 9 ms 23764 KB Output is correct
11 Correct 10 ms 23900 KB Output is correct
12 Correct 9 ms 23984 KB Output is correct
13 Correct 11 ms 23964 KB Output is correct
14 Correct 10 ms 23896 KB Output is correct
15 Correct 10 ms 23900 KB Output is correct
16 Correct 10 ms 23816 KB Output is correct
17 Correct 10 ms 23900 KB Output is correct
18 Correct 12 ms 23900 KB Output is correct
19 Correct 11 ms 23896 KB Output is correct
20 Correct 11 ms 23836 KB Output is correct
21 Correct 11 ms 23984 KB Output is correct
22 Correct 10 ms 23900 KB Output is correct
23 Correct 10 ms 23976 KB Output is correct
24 Correct 11 ms 23900 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23900 KB Output is correct
2 Correct 10 ms 23900 KB Output is correct
3 Correct 10 ms 23948 KB Output is correct
4 Correct 10 ms 23900 KB Output is correct
5 Correct 10 ms 23900 KB Output is correct
6 Correct 10 ms 23900 KB Output is correct
7 Correct 10 ms 23896 KB Output is correct
8 Correct 10 ms 23896 KB Output is correct
9 Correct 9 ms 23896 KB Output is correct
10 Correct 9 ms 23764 KB Output is correct
11 Correct 10 ms 23900 KB Output is correct
12 Correct 9 ms 23984 KB Output is correct
13 Correct 11 ms 23964 KB Output is correct
14 Correct 10 ms 23896 KB Output is correct
15 Correct 10 ms 23900 KB Output is correct
16 Correct 10 ms 23816 KB Output is correct
17 Correct 10 ms 23900 KB Output is correct
18 Correct 12 ms 23900 KB Output is correct
19 Correct 11 ms 23896 KB Output is correct
20 Correct 11 ms 23836 KB Output is correct
21 Correct 11 ms 23984 KB Output is correct
22 Correct 10 ms 23900 KB Output is correct
23 Correct 10 ms 23976 KB Output is correct
24 Correct 11 ms 23900 KB Output is correct
25 Correct 11 ms 24152 KB Output is correct
26 Correct 11 ms 24156 KB Output is correct
27 Correct 11 ms 24156 KB Output is correct
28 Correct 11 ms 24156 KB Output is correct
29 Correct 11 ms 24152 KB Output is correct
30 Correct 11 ms 24200 KB Output is correct
31 Correct 11 ms 23900 KB Output is correct
32 Correct 12 ms 24344 KB Output is correct
33 Correct 11 ms 23896 KB Output is correct
34 Correct 12 ms 24156 KB Output is correct
35 Correct 10 ms 24152 KB Output is correct
36 Correct 12 ms 24196 KB Output is correct
37 Correct 12 ms 24156 KB Output is correct
38 Correct 10 ms 23948 KB Output is correct
39 Correct 12 ms 24264 KB Output is correct
40 Correct 12 ms 24012 KB Output is correct
41 Correct 11 ms 24156 KB Output is correct
42 Correct 11 ms 24152 KB Output is correct
43 Correct 15 ms 24156 KB Output is correct
44 Correct 10 ms 23896 KB Output is correct
45 Correct 13 ms 24156 KB Output is correct
46 Correct 12 ms 24156 KB Output is correct
47 Correct 10 ms 23732 KB Output is correct
48 Correct 10 ms 24228 KB Output is correct
49 Correct 11 ms 24156 KB Output is correct
50 Correct 10 ms 24156 KB Output is correct
51 Correct 11 ms 24156 KB Output is correct
52 Correct 10 ms 24248 KB Output is correct
53 Correct 10 ms 24156 KB Output is correct
54 Correct 11 ms 24156 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23900 KB Output is correct
2 Correct 10 ms 23900 KB Output is correct
3 Correct 10 ms 23948 KB Output is correct
4 Correct 10 ms 23900 KB Output is correct
5 Correct 10 ms 23900 KB Output is correct
6 Correct 10 ms 23900 KB Output is correct
7 Correct 10 ms 23896 KB Output is correct
8 Correct 10 ms 23896 KB Output is correct
9 Correct 9 ms 23896 KB Output is correct
10 Correct 9 ms 23764 KB Output is correct
11 Correct 10 ms 23900 KB Output is correct
12 Correct 9 ms 23984 KB Output is correct
13 Correct 11 ms 23964 KB Output is correct
14 Correct 10 ms 23896 KB Output is correct
15 Correct 10 ms 23900 KB Output is correct
16 Correct 10 ms 23816 KB Output is correct
17 Correct 10 ms 23900 KB Output is correct
18 Correct 12 ms 23900 KB Output is correct
19 Correct 11 ms 23896 KB Output is correct
20 Correct 11 ms 23836 KB Output is correct
21 Correct 11 ms 23984 KB Output is correct
22 Correct 10 ms 23900 KB Output is correct
23 Correct 10 ms 23976 KB Output is correct
24 Correct 11 ms 23900 KB Output is correct
25 Correct 9 ms 23900 KB Output is correct
26 Correct 36 ms 32644 KB Output is correct
27 Correct 58 ms 32408 KB Output is correct
28 Correct 11 ms 24156 KB Output is correct
29 Correct 10 ms 23900 KB Output is correct
30 Correct 9 ms 23992 KB Output is correct
31 Correct 46 ms 32476 KB Output is correct
32 Correct 11 ms 24156 KB Output is correct
33 Correct 48 ms 36096 KB Output is correct
34 Correct 44 ms 32340 KB Output is correct
35 Correct 11 ms 24188 KB Output is correct
36 Correct 45 ms 32460 KB Output is correct
37 Correct 11 ms 24156 KB Output is correct
38 Correct 10 ms 24156 KB Output is correct
39 Correct 39 ms 32576 KB Output is correct
40 Correct 11 ms 24156 KB Output is correct
41 Correct 47 ms 32532 KB Output is correct
42 Correct 51 ms 33280 KB Output is correct
43 Correct 10 ms 23896 KB Output is correct
44 Correct 46 ms 36300 KB Output is correct
45 Correct 47 ms 35264 KB Output is correct
46 Correct 11 ms 24156 KB Output is correct
47 Correct 11 ms 24116 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 32640 KB Output is correct
2 Correct 48 ms 35788 KB Output is correct
3 Correct 12 ms 24156 KB Output is correct
4 Correct 12 ms 24152 KB Output is correct
5 Correct 11 ms 23900 KB Output is correct
6 Correct 10 ms 23756 KB Output is correct
7 Correct 11 ms 24156 KB Output is correct
8 Correct 59 ms 34236 KB Output is correct
9 Correct 12 ms 24156 KB Output is correct
10 Correct 54 ms 33448 KB Output is correct
11 Correct 11 ms 23896 KB Output is correct
12 Correct 50 ms 32932 KB Output is correct
13 Correct 56 ms 34128 KB Output is correct
14 Correct 57 ms 35676 KB Output is correct
15 Correct 39 ms 32576 KB Output is correct
16 Correct 10 ms 24192 KB Output is correct
17 Correct 10 ms 23760 KB Output is correct
18 Correct 42 ms 35456 KB Output is correct
19 Correct 50 ms 37480 KB Output is correct
20 Correct 11 ms 24156 KB Output is correct
21 Correct 11 ms 23776 KB Output is correct
22 Correct 48 ms 34352 KB Output is correct
23 Correct 11 ms 24252 KB Output is correct
24 Correct 54 ms 33600 KB Output is correct
25 Correct 59 ms 37484 KB Output is correct
26 Correct 11 ms 24108 KB Output is correct
27 Correct 11 ms 24116 KB Output is correct
28 Correct 11 ms 24220 KB Output is correct
29 Correct 11 ms 24168 KB Output is correct
30 Correct 11 ms 24156 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23900 KB Output is correct
2 Correct 10 ms 23900 KB Output is correct
3 Correct 10 ms 23948 KB Output is correct
4 Correct 10 ms 23900 KB Output is correct
5 Correct 10 ms 23900 KB Output is correct
6 Correct 10 ms 23900 KB Output is correct
7 Correct 10 ms 23896 KB Output is correct
8 Correct 10 ms 23896 KB Output is correct
9 Correct 9 ms 23896 KB Output is correct
10 Correct 9 ms 23764 KB Output is correct
11 Correct 10 ms 23900 KB Output is correct
12 Correct 9 ms 23984 KB Output is correct
13 Correct 11 ms 23964 KB Output is correct
14 Correct 10 ms 23896 KB Output is correct
15 Correct 10 ms 23900 KB Output is correct
16 Correct 10 ms 23816 KB Output is correct
17 Correct 10 ms 23900 KB Output is correct
18 Correct 12 ms 23900 KB Output is correct
19 Correct 11 ms 23896 KB Output is correct
20 Correct 11 ms 23836 KB Output is correct
21 Correct 11 ms 23984 KB Output is correct
22 Correct 10 ms 23900 KB Output is correct
23 Correct 10 ms 23976 KB Output is correct
24 Correct 11 ms 23900 KB Output is correct
25 Correct 11 ms 24152 KB Output is correct
26 Correct 11 ms 24156 KB Output is correct
27 Correct 11 ms 24156 KB Output is correct
28 Correct 11 ms 24156 KB Output is correct
29 Correct 11 ms 24152 KB Output is correct
30 Correct 11 ms 24200 KB Output is correct
31 Correct 11 ms 23900 KB Output is correct
32 Correct 12 ms 24344 KB Output is correct
33 Correct 11 ms 23896 KB Output is correct
34 Correct 12 ms 24156 KB Output is correct
35 Correct 10 ms 24152 KB Output is correct
36 Correct 12 ms 24196 KB Output is correct
37 Correct 12 ms 24156 KB Output is correct
38 Correct 10 ms 23948 KB Output is correct
39 Correct 12 ms 24264 KB Output is correct
40 Correct 12 ms 24012 KB Output is correct
41 Correct 11 ms 24156 KB Output is correct
42 Correct 11 ms 24152 KB Output is correct
43 Correct 15 ms 24156 KB Output is correct
44 Correct 10 ms 23896 KB Output is correct
45 Correct 13 ms 24156 KB Output is correct
46 Correct 12 ms 24156 KB Output is correct
47 Correct 10 ms 23732 KB Output is correct
48 Correct 10 ms 24228 KB Output is correct
49 Correct 11 ms 24156 KB Output is correct
50 Correct 10 ms 24156 KB Output is correct
51 Correct 11 ms 24156 KB Output is correct
52 Correct 10 ms 24248 KB Output is correct
53 Correct 10 ms 24156 KB Output is correct
54 Correct 11 ms 24156 KB Output is correct
55 Correct 9 ms 23900 KB Output is correct
56 Correct 36 ms 32644 KB Output is correct
57 Correct 58 ms 32408 KB Output is correct
58 Correct 11 ms 24156 KB Output is correct
59 Correct 10 ms 23900 KB Output is correct
60 Correct 9 ms 23992 KB Output is correct
61 Correct 46 ms 32476 KB Output is correct
62 Correct 11 ms 24156 KB Output is correct
63 Correct 48 ms 36096 KB Output is correct
64 Correct 44 ms 32340 KB Output is correct
65 Correct 11 ms 24188 KB Output is correct
66 Correct 45 ms 32460 KB Output is correct
67 Correct 11 ms 24156 KB Output is correct
68 Correct 10 ms 24156 KB Output is correct
69 Correct 39 ms 32576 KB Output is correct
70 Correct 11 ms 24156 KB Output is correct
71 Correct 47 ms 32532 KB Output is correct
72 Correct 51 ms 33280 KB Output is correct
73 Correct 10 ms 23896 KB Output is correct
74 Correct 46 ms 36300 KB Output is correct
75 Correct 47 ms 35264 KB Output is correct
76 Correct 11 ms 24156 KB Output is correct
77 Correct 11 ms 24116 KB Output is correct
78 Correct 46 ms 32640 KB Output is correct
79 Correct 48 ms 35788 KB Output is correct
80 Correct 12 ms 24156 KB Output is correct
81 Correct 12 ms 24152 KB Output is correct
82 Correct 11 ms 23900 KB Output is correct
83 Correct 10 ms 23756 KB Output is correct
84 Correct 11 ms 24156 KB Output is correct
85 Correct 59 ms 34236 KB Output is correct
86 Correct 12 ms 24156 KB Output is correct
87 Correct 54 ms 33448 KB Output is correct
88 Correct 11 ms 23896 KB Output is correct
89 Correct 50 ms 32932 KB Output is correct
90 Correct 56 ms 34128 KB Output is correct
91 Correct 57 ms 35676 KB Output is correct
92 Correct 39 ms 32576 KB Output is correct
93 Correct 10 ms 24192 KB Output is correct
94 Correct 10 ms 23760 KB Output is correct
95 Correct 42 ms 35456 KB Output is correct
96 Correct 50 ms 37480 KB Output is correct
97 Correct 11 ms 24156 KB Output is correct
98 Correct 11 ms 23776 KB Output is correct
99 Correct 48 ms 34352 KB Output is correct
100 Correct 11 ms 24252 KB Output is correct
101 Correct 54 ms 33600 KB Output is correct
102 Correct 59 ms 37484 KB Output is correct
103 Correct 11 ms 24108 KB Output is correct
104 Correct 11 ms 24116 KB Output is correct
105 Correct 11 ms 24220 KB Output is correct
106 Correct 11 ms 24168 KB Output is correct
107 Correct 11 ms 24156 KB Output is correct
108 Correct 268 ms 77572 KB Output is correct
109 Correct 310 ms 74088 KB Output is correct
110 Correct 312 ms 80792 KB Output is correct
111 Correct 349 ms 94952 KB Output is correct
112 Correct 363 ms 93392 KB Output is correct
113 Correct 250 ms 83244 KB Output is correct
114 Correct 258 ms 65892 KB Output is correct
115 Correct 287 ms 66192 KB Output is correct
116 Correct 320 ms 73808 KB Output is correct
117 Correct 356 ms 83704 KB Output is correct
118 Correct 284 ms 70288 KB Output is correct
119 Correct 316 ms 83904 KB Output is correct
120 Correct 345 ms 93508 KB Output is correct
121 Correct 317 ms 83796 KB Output is correct
122 Correct 342 ms 78164 KB Output is correct
123 Correct 242 ms 84916 KB Output is correct
124 Correct 372 ms 79952 KB Output is correct