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Submission #154960

# Submission time Handle Problem Language Result Execution time Memory
154960 2019-09-25T17:03:00 Z karma Mergers (JOI19_mergers) C++14
70 / 100
 3000 ms 73272 KB 
#include<bits/stdc++.h>
#define Task     "test"
#define ll       long long
#define pb       emplace_back
#define mp       make_pair
#define fi       first
#define se       second

using namespace std;

const int N = int(5e5) + 5;
typedef pair<int, int> pii;

vector<int> a[N], g;
int sz[N], n, k, u, v, nstate, full, res = 0;
int cnt[N], s[N], orgcnt[N], deg[N];
int in[N], out[N], Time;
bool big[N], choose[N];
vector<pii> vertex;

void DFS(int u, int par) {
    sz[u] = 1; in[u] = ++Time;
    for(int i = 0; i < int(a[u].size()); ++i) {
       if(a[u][i] == par) swap(a[u][i], a[u].back());
       if(a[u][i] != par) DFS(a[u][i], u), sz[u] += a[u][i];
    }
    if(u != 1) a[u].pop_back();
    out[u] = Time;
}

void Add(int u, int val) {
    if(cnt[s[u]] == 0) ++nstate;
    if(cnt[s[u]] == orgcnt[s[u]]) --full;
    cnt[s[u]] += val;
    if(cnt[s[u]] == orgcnt[s[u]]) ++full;
    if(cnt[s[u]] == 0) --nstate;
    for(int v: a[u])
        if(!big[v]) Add(v, val);
}

void DSU(int u, bool keep) {
    int Big = 0;
    for(int v: a[u])
        if(sz[v] > sz[Big]) Big = v;
    for(int v: a[u])
        if(v != Big) DSU(v, 0);
    if(Big) DSU(Big, 1), big[Big] = 1;
    Add(u, 1);
    if(full == nstate) vertex.pb(mp(in[u], u));
    if(Big) big[Big] = 0;
    if(!keep) Add(u, -1);
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    if(fopen(Task".inp", "r")) {
        freopen(Task".inp", "r", stdin);
        freopen(Task".out", "w", stdout);
    }
    cin >> n >> k;
    for(int i = 1; i < n; ++i) {
        cin >> u >> v;
        a[u].pb(v), a[v].pb(u);
    }
    for(int i = 1; i <= n; ++i) cin >> s[i], ++orgcnt[s[i]];
    DFS(1, 1); DSU(1, 1);
    sort(vertex.begin(), vertex.end());
    if(vertex.size() == 1) return cout << 0, 0;
    res = vertex.size();
    for(pii p: vertex) {
      while(!g.empty() && out[g.back()] < p.fi) g.pop_back();
      if(g.size()) {
        if(++deg[g.back()] == 1) --res;
      }
      g.pb(p.se);
    }
    if(deg[1] == 1) ++res;
    cout << (res + 1) / 2;
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:58:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".inp", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
mergers.cpp:59:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".out", "w", stdout);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 13 ms 12152 KB Output is correct
5 Correct 13 ms 12156 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12152 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 14 ms 12152 KB Output is correct
14 Correct 14 ms 12152 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 12 ms 12152 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 13 ms 12152 KB Output is correct
5 Correct 13 ms 12156 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12152 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 14 ms 12152 KB Output is correct
14 Correct 14 ms 12152 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 12 ms 12152 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12152 KB Output is correct
26 Correct 16 ms 12412 KB Output is correct
27 Correct 15 ms 12408 KB Output is correct
28 Correct 15 ms 12536 KB Output is correct
29 Correct 15 ms 12408 KB Output is correct
30 Correct 15 ms 12384 KB Output is correct
31 Correct 13 ms 12112 KB Output is correct
32 Correct 15 ms 12536 KB Output is correct
33 Correct 13 ms 12132 KB Output is correct
34 Correct 15 ms 12408 KB Output is correct
35 Correct 16 ms 12408 KB Output is correct
36 Correct 16 ms 12280 KB Output is correct
37 Correct 16 ms 12408 KB Output is correct
38 Correct 13 ms 12152 KB Output is correct
39 Correct 16 ms 12280 KB Output is correct
40 Correct 15 ms 12280 KB Output is correct
41 Correct 16 ms 12408 KB Output is correct
42 Correct 14 ms 12408 KB Output is correct
43 Correct 15 ms 12536 KB Output is correct
44 Correct 13 ms 12152 KB Output is correct
45 Correct 16 ms 12408 KB Output is correct
46 Correct 17 ms 12280 KB Output is correct
47 Correct 13 ms 12156 KB Output is correct
48 Correct 16 ms 12408 KB Output is correct
49 Correct 15 ms 12408 KB Output is correct
50 Correct 16 ms 12516 KB Output is correct
51 Correct 16 ms 12280 KB Output is correct
52 Correct 15 ms 12280 KB Output is correct
53 Correct 16 ms 12408 KB Output is correct
54 Correct 15 ms 12280 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 13 ms 12152 KB Output is correct
5 Correct 13 ms 12156 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12152 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 14 ms 12152 KB Output is correct
14 Correct 14 ms 12152 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 12 ms 12152 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12152 KB Output is correct
26 Correct 82 ms 18692 KB Output is correct
27 Correct 187 ms 18504 KB Output is correct
28 Correct 16 ms 12280 KB Output is correct
29 Correct 14 ms 12148 KB Output is correct
30 Correct 13 ms 12152 KB Output is correct
31 Correct 361 ms 18516 KB Output is correct
32 Correct 15 ms 12280 KB Output is correct
33 Correct 140 ms 25596 KB Output is correct
34 Correct 187 ms 18552 KB Output is correct
35 Correct 16 ms 12280 KB Output is correct
36 Correct 190 ms 19292 KB Output is correct
37 Correct 15 ms 12280 KB Output is correct
38 Correct 15 ms 12280 KB Output is correct
39 Correct 88 ms 18652 KB Output is correct
40 Correct 15 ms 12536 KB Output is correct
41 Correct 175 ms 18424 KB Output is correct
42 Correct 177 ms 20856 KB Output is correct
43 Correct 17 ms 12152 KB Output is correct
44 Correct 176 ms 25924 KB Output is correct
45 Correct 118 ms 22136 KB Output is correct
46 Correct 14 ms 12408 KB Output is correct
47 Correct 16 ms 12280 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 18752 KB Output is correct
2 Correct 95 ms 20840 KB Output is correct
3 Correct 17 ms 12408 KB Output is correct
4 Correct 15 ms 12280 KB Output is correct
5 Correct 13 ms 12156 KB Output is correct
6 Correct 13 ms 12148 KB Output is correct
7 Correct 16 ms 12280 KB Output is correct
8 Correct 539 ms 19832 KB Output is correct
9 Correct 19 ms 12280 KB Output is correct
10 Correct 480 ms 19180 KB Output is correct
11 Correct 13 ms 12252 KB Output is correct
12 Correct 385 ms 18936 KB Output is correct
13 Correct 404 ms 19936 KB Output is correct
14 Correct 311 ms 20932 KB Output is correct
15 Correct 86 ms 18544 KB Output is correct
16 Correct 15 ms 12408 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 104 ms 20836 KB Output is correct
19 Correct 146 ms 25068 KB Output is correct
20 Correct 17 ms 12280 KB Output is correct
21 Correct 13 ms 12200 KB Output is correct
22 Correct 85 ms 19660 KB Output is correct
23 Correct 16 ms 12408 KB Output is correct
24 Correct 343 ms 19240 KB Output is correct
25 Correct 195 ms 23832 KB Output is correct
26 Correct 16 ms 12408 KB Output is correct
27 Correct 16 ms 12408 KB Output is correct
28 Correct 20 ms 12284 KB Output is correct
29 Correct 15 ms 12408 KB Output is correct
30 Correct 18 ms 12408 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 13 ms 12152 KB Output is correct
5 Correct 13 ms 12156 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12152 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 14 ms 12152 KB Output is correct
14 Correct 14 ms 12152 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 12 ms 12152 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12152 KB Output is correct
26 Correct 16 ms 12412 KB Output is correct
27 Correct 15 ms 12408 KB Output is correct
28 Correct 15 ms 12536 KB Output is correct
29 Correct 15 ms 12408 KB Output is correct
30 Correct 15 ms 12384 KB Output is correct
31 Correct 13 ms 12112 KB Output is correct
32 Correct 15 ms 12536 KB Output is correct
33 Correct 13 ms 12132 KB Output is correct
34 Correct 15 ms 12408 KB Output is correct
35 Correct 16 ms 12408 KB Output is correct
36 Correct 16 ms 12280 KB Output is correct
37 Correct 16 ms 12408 KB Output is correct
38 Correct 13 ms 12152 KB Output is correct
39 Correct 16 ms 12280 KB Output is correct
40 Correct 15 ms 12280 KB Output is correct
41 Correct 16 ms 12408 KB Output is correct
42 Correct 14 ms 12408 KB Output is correct
43 Correct 15 ms 12536 KB Output is correct
44 Correct 13 ms 12152 KB Output is correct
45 Correct 16 ms 12408 KB Output is correct
46 Correct 17 ms 12280 KB Output is correct
47 Correct 13 ms 12156 KB Output is correct
48 Correct 16 ms 12408 KB Output is correct
49 Correct 15 ms 12408 KB Output is correct
50 Correct 16 ms 12516 KB Output is correct
51 Correct 16 ms 12280 KB Output is correct
52 Correct 15 ms 12280 KB Output is correct
53 Correct 16 ms 12408 KB Output is correct
54 Correct 15 ms 12280 KB Output is correct
55 Correct 13 ms 12152 KB Output is correct
56 Correct 82 ms 18692 KB Output is correct
57 Correct 187 ms 18504 KB Output is correct
58 Correct 16 ms 12280 KB Output is correct
59 Correct 14 ms 12148 KB Output is correct
60 Correct 13 ms 12152 KB Output is correct
61 Correct 361 ms 18516 KB Output is correct
62 Correct 15 ms 12280 KB Output is correct
63 Correct 140 ms 25596 KB Output is correct
64 Correct 187 ms 18552 KB Output is correct
65 Correct 16 ms 12280 KB Output is correct
66 Correct 190 ms 19292 KB Output is correct
67 Correct 15 ms 12280 KB Output is correct
68 Correct 15 ms 12280 KB Output is correct
69 Correct 88 ms 18652 KB Output is correct
70 Correct 15 ms 12536 KB Output is correct
71 Correct 175 ms 18424 KB Output is correct
72 Correct 177 ms 20856 KB Output is correct
73 Correct 17 ms 12152 KB Output is correct
74 Correct 176 ms 25924 KB Output is correct
75 Correct 118 ms 22136 KB Output is correct
76 Correct 14 ms 12408 KB Output is correct
77 Correct 16 ms 12280 KB Output is correct
78 Correct 79 ms 18752 KB Output is correct
79 Correct 95 ms 20840 KB Output is correct
80 Correct 17 ms 12408 KB Output is correct
81 Correct 15 ms 12280 KB Output is correct
82 Correct 13 ms 12156 KB Output is correct
83 Correct 13 ms 12148 KB Output is correct
84 Correct 16 ms 12280 KB Output is correct
85 Correct 539 ms 19832 KB Output is correct
86 Correct 19 ms 12280 KB Output is correct
87 Correct 480 ms 19180 KB Output is correct
88 Correct 13 ms 12252 KB Output is correct
89 Correct 385 ms 18936 KB Output is correct
90 Correct 404 ms 19936 KB Output is correct
91 Correct 311 ms 20932 KB Output is correct
92 Correct 86 ms 18544 KB Output is correct
93 Correct 15 ms 12408 KB Output is correct
94 Correct 13 ms 12152 KB Output is correct
95 Correct 104 ms 20836 KB Output is correct
96 Correct 146 ms 25068 KB Output is correct
97 Correct 17 ms 12280 KB Output is correct
98 Correct 13 ms 12200 KB Output is correct
99 Correct 85 ms 19660 KB Output is correct
100 Correct 16 ms 12408 KB Output is correct
101 Correct 343 ms 19240 KB Output is correct
102 Correct 195 ms 23832 KB Output is correct
103 Correct 16 ms 12408 KB Output is correct
104 Correct 16 ms 12408 KB Output is correct
105 Correct 20 ms 12284 KB Output is correct
106 Correct 15 ms 12408 KB Output is correct
107 Correct 18 ms 12408 KB Output is correct
108 Correct 550 ms 41036 KB Output is correct
109 Correct 1419 ms 55596 KB Output is correct
110 Correct 1038 ms 66720 KB Output is correct
111 Correct 1226 ms 73272 KB Output is correct
112 Correct 1179 ms 59272 KB Output is correct
113 Correct 756 ms 46652 KB Output is correct
114 Correct 2570 ms 37856 KB Output is correct
115 Correct 2001 ms 37860 KB Output is correct
116 Execution timed out 3045 ms 38704 KB Time limit exceeded
117 Halted 0 ms 0 KB -