oj.uz

Submission #559904

# Submission time Handle Problem Language Result Execution time Memory
559904 2022-05-11T00:02:39 Z loctildore Capital City (JOI20_capital_city) C++14
100 / 100
 1010 ms 39024 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define f first
#define s second
//#define endl '\n'
#define all(x) begin(x), end(x)
int n,k,a,b,ts;
vector<int> grph[200069],towns[200069];
int col[200069],cnt[200069],curcnt[200069],done[200069];
int sz[200069],par[200069];
bool cent[200069];
void clear(int x, int lst=-1) {
  curcnt[col[x]]=0;
  done[col[x]]=0;
  for (auto i : grph[x]) {
    if (i==lst||cent[i]) {
      continue;
    }
    clear(i,x);
  }
}
int dfs(int x, int lst) {
  sz[x]=1;
  par[x]=lst;
  curcnt[col[x]]++;
  for (auto i : grph[x]) {
    if (i==lst||cent[i]) {
      continue;
    }
    sz[x]+=dfs(i,x);
  }
  return sz[x];
}
int fndcent(int x, int lst=-1) {
  for (auto i : grph[x]) {
    if (i==lst||cent[i]) {
      continue;
    }
    if (sz[i]*2>ts) {
      return fndcent(i,x);
    }
  }
  return x;
}
int solve(int x) {
  clear(x);
  ts=dfs(x,x);
  x=fndcent(x);
  //x is now the centroid
  clear(x);
  dfs(x,x);
  stack<int> sk;
  sk.push(col[x]);
  int ans=-1;
  while (sk.size()) {
    int tmp=sk.top();
    sk.pop();
    if (done[tmp]) {
      continue;
    }
    done[tmp]=true;
    if (curcnt[tmp]!=cnt[tmp]) {
      ans=INT_MAX;
      break;
    }
    ans++;
    for (auto i:towns[tmp]) {
      sk.push(col[par[i]]);
    }
  }
  cent[x]=true;
  for (auto i:grph[x]) {
    if (!cent[i]) {
      ans=min(ans,solve(i));
    }
  }
  return ans;
}
int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cin>>n>>k;
  for (int i = 0; i < n-1; i++) {
    cin>>a>>b;
    a--;b--;
    grph[a].push_back(b);
    grph[b].push_back(a);
  }
  for (int i = 0; i < n; i++) {
    cin>>col[i];
    col[i]--;
    cnt[col[i]]++;
    towns[col[i]].push_back(i);
  }
  cout<<solve(0)<<endl;
  return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9724 KB Output is correct
3 Correct 7 ms 9732 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 6 ms 9748 KB Output is correct
6 Correct 5 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 5 ms 9680 KB Output is correct
10 Correct 6 ms 9724 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9724 KB Output is correct
3 Correct 7 ms 9732 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 6 ms 9748 KB Output is correct
6 Correct 5 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 5 ms 9680 KB Output is correct
10 Correct 6 ms 9724 KB Output is correct
11 Correct 7 ms 9812 KB Output is correct
12 Correct 7 ms 9852 KB Output is correct
13 Correct 9 ms 9812 KB Output is correct
14 Correct 8 ms 9860 KB Output is correct
15 Correct 7 ms 9940 KB Output is correct
16 Correct 8 ms 9860 KB Output is correct
17 Correct 7 ms 9940 KB Output is correct
18 Correct 9 ms 9864 KB Output is correct
19 Correct 7 ms 9940 KB Output is correct
20 Correct 8 ms 9940 KB Output is correct
21 Correct 7 ms 9968 KB Output is correct
22 Correct 7 ms 9984 KB Output is correct
23 Correct 7 ms 9940 KB Output is correct
24 Correct 7 ms 9940 KB Output is correct
25 Correct 7 ms 9940 KB Output is correct
26 Correct 8 ms 9940 KB Output is correct
27 Correct 8 ms 9920 KB Output is correct
28 Correct 8 ms 9948 KB Output is correct
29 Correct 8 ms 9860 KB Output is correct
30 Correct 10 ms 9980 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 745 ms 35388 KB Output is correct
2 Correct 255 ms 38956 KB Output is correct
3 Correct 710 ms 38260 KB Output is correct
4 Correct 238 ms 39012 KB Output is correct
5 Correct 651 ms 35956 KB Output is correct
6 Correct 251 ms 38984 KB Output is correct
7 Correct 803 ms 36056 KB Output is correct
8 Correct 280 ms 38488 KB Output is correct
9 Correct 987 ms 34164 KB Output is correct
10 Correct 952 ms 32248 KB Output is correct
11 Correct 921 ms 34528 KB Output is correct
12 Correct 928 ms 36740 KB Output is correct
13 Correct 904 ms 31924 KB Output is correct
14 Correct 973 ms 36900 KB Output is correct
15 Correct 924 ms 36636 KB Output is correct
16 Correct 892 ms 32656 KB Output is correct
17 Correct 969 ms 33116 KB Output is correct
18 Correct 935 ms 33240 KB Output is correct
19 Correct 1010 ms 35752 KB Output is correct
20 Correct 938 ms 37580 KB Output is correct
21 Correct 6 ms 9684 KB Output is correct

Subtask #4
59.0 / 59.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9724 KB Output is correct
3 Correct 7 ms 9732 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 6 ms 9748 KB Output is correct
6 Correct 5 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 5 ms 9680 KB Output is correct
10 Correct 6 ms 9724 KB Output is correct
11 Correct 7 ms 9812 KB Output is correct
12 Correct 7 ms 9852 KB Output is correct
13 Correct 9 ms 9812 KB Output is correct
14 Correct 8 ms 9860 KB Output is correct
15 Correct 7 ms 9940 KB Output is correct
16 Correct 8 ms 9860 KB Output is correct
17 Correct 7 ms 9940 KB Output is correct
18 Correct 9 ms 9864 KB Output is correct
19 Correct 7 ms 9940 KB Output is correct
20 Correct 8 ms 9940 KB Output is correct
21 Correct 7 ms 9968 KB Output is correct
22 Correct 7 ms 9984 KB Output is correct
23 Correct 7 ms 9940 KB Output is correct
24 Correct 7 ms 9940 KB Output is correct
25 Correct 7 ms 9940 KB Output is correct
26 Correct 8 ms 9940 KB Output is correct
27 Correct 8 ms 9920 KB Output is correct
28 Correct 8 ms 9948 KB Output is correct
29 Correct 8 ms 9860 KB Output is correct
30 Correct 10 ms 9980 KB Output is correct
31 Correct 745 ms 35388 KB Output is correct
32 Correct 255 ms 38956 KB Output is correct
33 Correct 710 ms 38260 KB Output is correct
34 Correct 238 ms 39012 KB Output is correct
35 Correct 651 ms 35956 KB Output is correct
36 Correct 251 ms 38984 KB Output is correct
37 Correct 803 ms 36056 KB Output is correct
38 Correct 280 ms 38488 KB Output is correct
39 Correct 987 ms 34164 KB Output is correct
40 Correct 952 ms 32248 KB Output is correct
41 Correct 921 ms 34528 KB Output is correct
42 Correct 928 ms 36740 KB Output is correct
43 Correct 904 ms 31924 KB Output is correct
44 Correct 973 ms 36900 KB Output is correct
45 Correct 924 ms 36636 KB Output is correct
46 Correct 892 ms 32656 KB Output is correct
47 Correct 969 ms 33116 KB Output is correct
48 Correct 935 ms 33240 KB Output is correct
49 Correct 1010 ms 35752 KB Output is correct
50 Correct 938 ms 37580 KB Output is correct
51 Correct 6 ms 9684 KB Output is correct
52 Correct 558 ms 24548 KB Output is correct
53 Correct 624 ms 24544 KB Output is correct
54 Correct 574 ms 24544 KB Output is correct
55 Correct 613 ms 24552 KB Output is correct
56 Correct 570 ms 24544 KB Output is correct
57 Correct 583 ms 24636 KB Output is correct
58 Correct 586 ms 27812 KB Output is correct
59 Correct 507 ms 28236 KB Output is correct
60 Correct 669 ms 27636 KB Output is correct
61 Correct 765 ms 27480 KB Output is correct
62 Correct 250 ms 39024 KB Output is correct
63 Correct 258 ms 39004 KB Output is correct
64 Correct 249 ms 38656 KB Output is correct
65 Correct 242 ms 38924 KB Output is correct
66 Correct 428 ms 31852 KB Output is correct
67 Correct 381 ms 31752 KB Output is correct
68 Correct 446 ms 31880 KB Output is correct
69 Correct 406 ms 31812 KB Output is correct
70 Correct 429 ms 31652 KB Output is correct
71 Correct 469 ms 31776 KB Output is correct
72 Correct 414 ms 31844 KB Output is correct
73 Correct 427 ms 31144 KB Output is correct
74 Correct 451 ms 31816 KB Output is correct
75 Correct 402 ms 31832 KB Output is correct
76 Correct 676 ms 31132 KB Output is correct
77 Correct 622 ms 29716 KB Output is correct
78 Correct 883 ms 33080 KB Output is correct
79 Correct 883 ms 31644 KB Output is correct
80 Correct 787 ms 37228 KB Output is correct
81 Correct 847 ms 34352 KB Output is correct
82 Correct 860 ms 34484 KB Output is correct
83 Correct 867 ms 31752 KB Output is correct
84 Correct 864 ms 36500 KB Output is correct
85 Correct 868 ms 35196 KB Output is correct
86 Correct 883 ms 31432 KB Output is correct
87 Correct 798 ms 32860 KB Output is correct
88 Correct 722 ms 33852 KB Output is correct
89 Correct 739 ms 30580 KB Output is correct
90 Correct 666 ms 30452 KB Output is correct
91 Correct 751 ms 32296 KB Output is correct
92 Correct 700 ms 31308 KB Output is correct
93 Correct 743 ms 31016 KB Output is correct
94 Correct 700 ms 30540 KB Output is correct
95 Correct 751 ms 31820 KB Output is correct
96 Correct 727 ms 30664 KB Output is correct
97 Correct 715 ms 32312 KB Output is correct