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답안 #1059244

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1059244 2024-08-14T19:39:54 Z MilosMilutinovic Unique Cities (JOI19_ho_t5) C++14
100 / 100
 1282 ms 154008 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAX = (int) (8e6);

int rt[MAX], ch[MAX][2], cnt[MAX], tsz;

void Change(int& x, int y, int l, int r, int p) {
  x = ++tsz;
  ch[x][0] = ch[y][0];
  ch[x][1] = ch[y][1];
  cnt[x] = cnt[y];
  if (l == r) {
    cnt[x] = 1;
    return;
  }
  int mid = (l + r) >> 1;
  if (p <= mid) {
    Change(ch[x][0], ch[y][0], l, mid, p);
  } else {
    Change(ch[x][1], ch[y][1], mid + 1, r, p);
  }
  cnt[x] = cnt[ch[x][0]] + cnt[ch[x][1]]; 
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  vector<vector<int>> g(n);
  for (int i = 1; i < n; i++) {
    int x, y;
    cin >> x >> y;
    --x; --y;
    g[x].push_back(y);
    g[y].push_back(x);
  }
  vector<int> c(n);
  for (int i = 0; i < n; i++) {
    cin >> c[i];
    --c[i];
  }
  auto Bfs = [&](int v) {
    vector<int> d(n, -1);
    vector<int> que(1, v);
    d[v] = 0;
    for (int b = 0; b < (int) que.size(); b++) {
      int i = que[b];
      for (int j : g[i]) {
        if (d[j] == -1) {
          d[j] = d[i] + 1;
          que.push_back(j);
        }
      }
    }
    return d;
  }; 
  int x, y;
  {
    vector<int> d = Bfs(0);
    x = 0;
    for (int i = 1; i < n; i++) {
      if (d[i] > d[x]) {
        x = i;
      }
    }
  }
  {
    vector<int> d = Bfs(x);
    y = 0;
    for (int i = 1; i < n; i++) {
      if (d[i] > d[y]) {
        y = i;
      }
    }
  }
  vector<vector<int>> d(2);
  d[0] = Bfs(x);
  d[1] = Bfs(y);
  vector<int> res(n);
  for (int foo = 0; foo < 2; foo++) {
    int root = (foo == 0 ? x : y);
    const int L = 18;
    vector<int> mx(n);
    vector<vector<int>> pr(n, vector<int>(L));
    vector<int> dep(n);
    function<void(int, int)> Dfs = [&](int v, int pv) {
      pr[v][0] = pv;
      for (int i = 1; i < L; i++) {
        pr[v][i] = pr[pr[v][i - 1]][i - 1];
      }
      mx[v] = 1;
      for (int u : g[v]) {
        if (u == pv) {
          continue;
        }
        dep[u] = dep[v] + 1;
        Dfs(u, v);
        mx[v] = max(mx[v], mx[u] + 1);
      }
    };
    auto Jump = [&](int v, int k) {
      for (int i = L - 1; i >= 0; i--) {
        if (k >> i & 1) {
          v = pr[v][i];
        }
      }
      return v;
    };
    Dfs(root, root);
    vector<int> st(8 * n, 1);
    vector<int> lzy(8 * n);
    auto Push = [&](int x) {
      st[x * 2] += lzy[x];
      st[x * 2 + 1] += lzy[x];
      lzy[x * 2] += lzy[x];
      lzy[x * 2 + 1] += lzy[x];
      lzy[x] = 0;
    }; 
    function<void(int, int, int, int, int, int)> Modify = [&](int x, int l, int r, int ll, int rr, int v) {
      if (ll <= l && r <= rr) {
        st[x] += v;
        lzy[x] += v;
        Push(x);
        return;
      }
      Push(x);
      int mid = (l + r) >> 1;
      if (rr <= mid) {
        Modify(x * 2, l, mid, ll, rr, v);
      } else if (ll > mid) {
        Modify(x * 2 + 1, mid + 1, r, ll, rr, v);
      } else {
        Modify(x * 2, l, mid, ll, rr, v);
        Modify(x * 2 + 1, mid + 1, r, ll, rr, v);
      }
      st[x] = max(st[x * 2], st[x * 2 + 1]);
    };
    function<int(int, int, int, int, int)> Query = [&](int x, int l, int r, int ll, int rr) {
      if (ll <= l && r <= rr) {
        return st[x];
      }
      Push(x);
      int mid = (l + r) >> 1;
      int res;
      if (rr <= mid) {
        res = Query(x * 2, l, mid, ll, rr);
      } else if (ll > mid) {
        res = Query(x * 2 + 1, mid + 1, r, ll, rr);
      } else {
        res = max(Query(x * 2, l, mid, ll, rr), Query(x * 2 + 1, mid + 1, r, ll, rr));
      }
      st[x] = max(st[x * 2], st[x * 2 + 1]);
      return res;
    };
    function<int(int, int, int, int)> Walk = [&](int x, int l, int r, int p) {
      if (l > p || st[x] < 1) {
        return -1;
      }
      if (l == r) {
        return l;
      }
      Push(x);
      int mid = (l + r) >> 1;
      int ret = Walk(x * 2 + 1, mid + 1, r, p);
      if (ret == -1) {
        ret = Walk(x * 2, l, mid, p);
      }
      st[x] = max(st[x * 2], st[x * 2 + 1]);
      return ret;
    };
    auto Add = [&](int v, int d, int p) {
      Modify(1, 0, n - 1, max(0, dep[v] - d + 1), dep[v], p);
    };
    while (tsz > 0) {
      ch[tsz][0] = 0;
      ch[tsz][1] = 0;
      cnt[tsz] = 0;
      tsz--;
    }
    for (int i = 0; i < n; i++) {
      rt[i] = 0;
    }
    function<void(int, int)> Solve = [&](int v, int pv) {
      if (d[foo][v] >= d[foo ^ 1][v]) {
        Add(v, mx[v], -1);
        int d = (dep[v] == 0 ? -1 : Walk(1, 0, n - 1, dep[v] - 1));
        if (d == -1) {
          res[v] = 0;
        } else {
          res[v] = cnt[rt[Jump(v, dep[v] - d)]];
        }
        Add(v, mx[v], +1);
      }
      multiset<int> st;
      for (int u : g[v]) {
        if (u == pv) {
          continue;
        }
        st.insert(mx[u]);
      }
      for (int u : g[v]) {
        if (u == pv) {
          continue;
        }
        st.erase(st.find(mx[u]));
        if (!st.empty()) {
          Add(pr[v][0], *prev(st.end()), -1);
        }
        int d = (dep[v] == 0 ? -1 : Walk(1, 0, n - 1, dep[v] - 1));
        rt[v] = 0;
        if (d != -1) {
          rt[v] = rt[Jump(v, dep[v] - d)];
        }
        Change(rt[v], rt[v], 0, m - 1, c[v]);
        Solve(u, v);
        if (!st.empty()) {
          Add(pr[v][0], *prev(st.end()), +1);
        }
        st.insert(mx[u]);
      }
    };
    Solve(root, root);
  }
  for (int i = 0; i < n; i++) {
    cout << res[i] << '\n';
  }
  return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 4 ms 1116 KB Output is correct
3 Correct 2 ms 860 KB Output is correct
4 Correct 4 ms 1372 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 5 ms 1628 KB Output is correct
7 Correct 5 ms 1116 KB Output is correct
8 Correct 5 ms 1100 KB Output is correct
9 Correct 5 ms 1116 KB Output is correct
10 Correct 4 ms 1116 KB Output is correct
11 Correct 4 ms 1116 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 4 ms 1372 KB Output is correct
14 Correct 5 ms 1076 KB Output is correct
15 Correct 5 ms 1116 KB Output is correct
16 Correct 6 ms 1116 KB Output is correct
17 Correct 6 ms 1372 KB Output is correct
18 Correct 4 ms 1116 KB Output is correct
19 Correct 4 ms 1116 KB Output is correct
20 Correct 4 ms 1632 KB Output is correct
21 Correct 5 ms 1372 KB Output is correct
22 Correct 4 ms 1116 KB Output is correct
23 Correct 5 ms 1116 KB Output is correct
24 Correct 4 ms 1116 KB Output is correct
25 Correct 5 ms 1116 KB Output is correct
26 Correct 5 ms 1116 KB Output is correct
27 Correct 5 ms 1628 KB Output is correct
28 Correct 5 ms 1628 KB Output is correct
29 Correct 5 ms 1372 KB Output is correct
30 Correct 5 ms 1116 KB Output is correct
31 Correct 6 ms 1372 KB Output is correct
32 Correct 6 ms 1372 KB Output is correct

Subtask #2
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 390 ms 30608 KB Output is correct
2 Correct 455 ms 62412 KB Output is correct
3 Correct 81 ms 11700 KB Output is correct
4 Correct 753 ms 52604 KB Output is correct
5 Correct 977 ms 108440 KB Output is correct
6 Correct 983 ms 83624 KB Output is correct
7 Correct 765 ms 57116 KB Output is correct
8 Correct 799 ms 62380 KB Output is correct
9 Correct 747 ms 60676 KB Output is correct
10 Correct 798 ms 60220 KB Output is correct
11 Correct 920 ms 65048 KB Output is correct
12 Correct 1033 ms 93088 KB Output is correct
13 Correct 984 ms 86308 KB Output is correct
14 Correct 940 ms 83676 KB Output is correct
15 Correct 1032 ms 65312 KB Output is correct
16 Correct 944 ms 96412 KB Output is correct
17 Correct 1010 ms 85912 KB Output is correct

Subtask #3
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 657 ms 73976 KB Output is correct
2 Correct 1154 ms 143256 KB Output is correct
3 Correct 104 ms 19284 KB Output is correct
4 Correct 874 ms 97904 KB Output is correct
5 Correct 1209 ms 154008 KB Output is correct
6 Correct 1095 ms 126184 KB Output is correct
7 Correct 888 ms 99488 KB Output is correct
8 Correct 999 ms 111256 KB Output is correct
9 Correct 942 ms 107260 KB Output is correct
10 Correct 927 ms 103504 KB Output is correct
11 Correct 1031 ms 103384 KB Output is correct
12 Correct 1282 ms 145064 KB Output is correct
13 Correct 1128 ms 125216 KB Output is correct
14 Correct 1163 ms 125480 KB Output is correct
15 Correct 1110 ms 108712 KB Output is correct
16 Correct 1117 ms 138736 KB Output is correct
17 Correct 1093 ms 128868 KB Output is correct

Subtask #4
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 4 ms 1116 KB Output is correct
3 Correct 2 ms 860 KB Output is correct
4 Correct 4 ms 1372 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 5 ms 1628 KB Output is correct
7 Correct 5 ms 1116 KB Output is correct
8 Correct 5 ms 1100 KB Output is correct
9 Correct 5 ms 1116 KB Output is correct
10 Correct 4 ms 1116 KB Output is correct
11 Correct 4 ms 1116 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 4 ms 1372 KB Output is correct
14 Correct 5 ms 1076 KB Output is correct
15 Correct 5 ms 1116 KB Output is correct
16 Correct 6 ms 1116 KB Output is correct
17 Correct 6 ms 1372 KB Output is correct
18 Correct 4 ms 1116 KB Output is correct
19 Correct 4 ms 1116 KB Output is correct
20 Correct 4 ms 1632 KB Output is correct
21 Correct 5 ms 1372 KB Output is correct
22 Correct 4 ms 1116 KB Output is correct
23 Correct 5 ms 1116 KB Output is correct
24 Correct 4 ms 1116 KB Output is correct
25 Correct 5 ms 1116 KB Output is correct
26 Correct 5 ms 1116 KB Output is correct
27 Correct 5 ms 1628 KB Output is correct
28 Correct 5 ms 1628 KB Output is correct
29 Correct 5 ms 1372 KB Output is correct
30 Correct 5 ms 1116 KB Output is correct
31 Correct 6 ms 1372 KB Output is correct
32 Correct 6 ms 1372 KB Output is correct
33 Correct 390 ms 30608 KB Output is correct
34 Correct 455 ms 62412 KB Output is correct
35 Correct 81 ms 11700 KB Output is correct
36 Correct 753 ms 52604 KB Output is correct
37 Correct 977 ms 108440 KB Output is correct
38 Correct 983 ms 83624 KB Output is correct
39 Correct 765 ms 57116 KB Output is correct
40 Correct 799 ms 62380 KB Output is correct
41 Correct 747 ms 60676 KB Output is correct
42 Correct 798 ms 60220 KB Output is correct
43 Correct 920 ms 65048 KB Output is correct
44 Correct 1033 ms 93088 KB Output is correct
45 Correct 984 ms 86308 KB Output is correct
46 Correct 940 ms 83676 KB Output is correct
47 Correct 1032 ms 65312 KB Output is correct
48 Correct 944 ms 96412 KB Output is correct
49 Correct 1010 ms 85912 KB Output is correct
50 Correct 657 ms 73976 KB Output is correct
51 Correct 1154 ms 143256 KB Output is correct
52 Correct 104 ms 19284 KB Output is correct
53 Correct 874 ms 97904 KB Output is correct
54 Correct 1209 ms 154008 KB Output is correct
55 Correct 1095 ms 126184 KB Output is correct
56 Correct 888 ms 99488 KB Output is correct
57 Correct 999 ms 111256 KB Output is correct
58 Correct 942 ms 107260 KB Output is correct
59 Correct 927 ms 103504 KB Output is correct
60 Correct 1031 ms 103384 KB Output is correct
61 Correct 1282 ms 145064 KB Output is correct
62 Correct 1128 ms 125216 KB Output is correct
63 Correct 1163 ms 125480 KB Output is correct
64 Correct 1110 ms 108712 KB Output is correct
65 Correct 1117 ms 138736 KB Output is correct
66 Correct 1093 ms 128868 KB Output is correct
67 Correct 76 ms 12372 KB Output is correct
68 Correct 392 ms 63960 KB Output is correct
69 Correct 557 ms 73188 KB Output is correct
70 Correct 729 ms 63344 KB Output is correct
71 Correct 931 ms 113640 KB Output is correct
72 Correct 934 ms 90784 KB Output is correct
73 Correct 740 ms 62612 KB Output is correct
74 Correct 891 ms 70816 KB Output is correct
75 Correct 818 ms 67744 KB Output is correct
76 Correct 835 ms 69032 KB Output is correct
77 Correct 923 ms 67684 KB Output is correct
78 Correct 1056 ms 103336 KB Output is correct
79 Correct 950 ms 98716 KB Output is correct
80 Correct 1049 ms 86952 KB Output is correct
81 Correct 983 ms 72476 KB Output is correct
82 Correct 948 ms 100916 KB Output is correct
83 Correct 1004 ms 91968 KB Output is correct
84 Correct 770 ms 73376 KB Output is correct
85 Correct 999 ms 129064 KB Output is correct
86 Correct 966 ms 103064 KB Output is correct
87 Correct 764 ms 74460 KB Output is correct
88 Correct 889 ms 86184 KB Output is correct
89 Correct 863 ms 84120 KB Output is correct
90 Correct 919 ms 79776 KB Output is correct
91 Correct 828 ms 80416 KB Output is correct
92 Correct 1063 ms 131748 KB Output is correct
93 Correct 1037 ms 98924 KB Output is correct
94 Correct 979 ms 90968 KB Output is correct
95 Correct 997 ms 84672 KB Output is correct
96 Correct 984 ms 113844 KB Output is correct
97 Correct 993 ms 106528 KB Output is correct
98 Correct 806 ms 98080 KB Output is correct
99 Correct 1033 ms 139424 KB Output is correct
100 Correct 1048 ms 124708 KB Output is correct
101 Correct 956 ms 92956 KB Output is correct
102 Correct 909 ms 101544 KB Output is correct
103 Correct 863 ms 99244 KB Output is correct
104 Correct 861 ms 96988 KB Output is correct
105 Correct 954 ms 95008 KB Output is correct
106 Correct 1166 ms 129064 KB Output is correct
107 Correct 1101 ms 125228 KB Output is correct
108 Correct 1079 ms 117056 KB Output is correct
109 Correct 1117 ms 106328 KB Output is correct
110 Correct 1108 ms 132556 KB Output is correct
111 Correct 1085 ms 126240 KB Output is correct