oj.uz

답안 #113266

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
113266 2019-05-24T13:53:03 Z IOrtroiii 늑대인간 (IOI18_werewolf) C++14
100 / 100
 1669 ms 110728 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
const int N = 200200;
 
int n;
 
struct Tree {
   int root[N];
   int par[18][N];
   vector<int> g[N];
   vector<pair<int, int>> edge;
   int tin[N], tout[N], tt;
   void add(int u,int v) {
      edge.emplace_back(u, v);
   }
 
   void dfs(int u, int p) {
      par[0][u] = p;
      tin[u] = ++tt;
      for (int i = 1; i < 18; ++i) par[i][u] = par[i - 1][par[i - 1][u]];
      for (int v : g[u]) {
         dfs(v, u);
      }
      tout[u] = tt;
   }
 
   int anc(int u) {
      return root[u] == u ? u : root[u] = anc(root[u]);
   }
 
   void build() {
      for (int i = 0; i < n; ++i) root[i] = i;
      sort(edge.begin(), edge.end());
      for (auto e : edge) {
         int u = abs(e.first), v = abs(e.second);
         u = anc(u), v = anc(v);
         if (u ^ v) {
            g[u].push_back(v);
            root[v] = u;
         }
      }
   }
   int getL(int u,int l) {
      for (int i = 17; i >= 0; --i) {
         if (par[i][u] >= l) u = par[i][u];
      }
      return u;
   }
   int getR(int u,int r) {
      for (int i = 17; i >= 0; --i) {
         if (par[i][u] <= r) u = par[i][u];
      }
      return u;
   }
} pre, suf;
 
int ft[N];
 
void add(int p) {
   for (; p <= n; p += p & -p) ft[p]++;
}
 
int get(int p) {
   int ans = 0;
   for (; p > 0; p -= p & -p) ans += ft[p];
   return ans;
}
 
int get(int l,int r) {
   return get(r) - get(l - 1);
}
 
struct Query {
   int l, r, id, sgn;
   Query(int l = 0,int r = 0,int id = 0,int sgn = 0) : l(l), r(r), id(id), sgn(sgn) {}
   bool operator < (const Query &q) const {
      return r < q.r;
   }
};
 
int ans[N];
 
vector<int> check_validity(int n,vector<int> x, vector<int> y, vector<int> s, vector<int> e, vector<int> l,vector<int> r) {
   ::n = n;
   int m = x.size(), q = s.size();
   for (int i = 0; i < m; ++i) {
      if (x[i] < y[i]) swap(x[i], y[i]);
      pre.add(x[i], y[i]);
      suf.add(-y[i], -x[i]);
   }
 
   pre.build();
   suf.build();
   pre.dfs(n - 1, n - 1);
   suf.dfs(0, 0);
 
   vector<vector<int>> ps(n + 1);
   for (int i = 0; i < n; ++i) {
      ps[pre.tin[i]].push_back(suf.tin[i]);
   }
   vector<vector<Query>> qs(n + 1);
   for (int i = 0; i < q; ++i) {
      int u = pre.getR(e[i], r[i]), v = suf.getL(s[i], l[i]);
      qs[pre.tin[u] - 1].push_back(Query(suf.tin[v], suf.tout[v], i, -1));
      qs[pre.tout[u]].push_back(Query(suf.tin[v], suf.tout[v], i, 1));
   }
 
 
   for (int i = 0; i <= n; ++i) {
      for (int p : ps[i]) {
         add(p);
      }
      for (auto q : qs[i]) {
         ans[q.id] += q.sgn * get(q.l, q.r);
      }
   }
 
   for (int i = 0; i < q; ++i) ans[i] = ans[i] > 0;
   return vector<int>(ans, ans + q);
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 9984 KB Output is correct
2 Correct 13 ms 9984 KB Output is correct
3 Correct 14 ms 9984 KB Output is correct
4 Correct 16 ms 9984 KB Output is correct
5 Correct 10 ms 9984 KB Output is correct
6 Correct 10 ms 9984 KB Output is correct
7 Correct 10 ms 10112 KB Output is correct
8 Correct 9 ms 9984 KB Output is correct
9 Correct 10 ms 9984 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 9984 KB Output is correct
2 Correct 13 ms 9984 KB Output is correct
3 Correct 14 ms 9984 KB Output is correct
4 Correct 16 ms 9984 KB Output is correct
5 Correct 10 ms 9984 KB Output is correct
6 Correct 10 ms 9984 KB Output is correct
7 Correct 10 ms 10112 KB Output is correct
8 Correct 9 ms 9984 KB Output is correct
9 Correct 10 ms 9984 KB Output is correct
10 Correct 16 ms 11264 KB Output is correct
11 Correct 33 ms 11264 KB Output is correct
12 Correct 17 ms 11264 KB Output is correct
13 Correct 18 ms 11392 KB Output is correct
14 Correct 16 ms 11392 KB Output is correct
15 Correct 17 ms 11392 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1669 ms 92036 KB Output is correct
2 Correct 1273 ms 94376 KB Output is correct
3 Correct 1200 ms 92736 KB Output is correct
4 Correct 1239 ms 91664 KB Output is correct
5 Correct 1247 ms 91712 KB Output is correct
6 Correct 1405 ms 91712 KB Output is correct
7 Correct 1180 ms 90448 KB Output is correct
8 Correct 943 ms 94316 KB Output is correct
9 Correct 662 ms 92636 KB Output is correct
10 Correct 509 ms 90456 KB Output is correct
11 Correct 542 ms 91356 KB Output is correct
12 Correct 582 ms 91064 KB Output is correct
13 Correct 1104 ms 98172 KB Output is correct
14 Correct 1124 ms 98268 KB Output is correct
15 Correct 1196 ms 98140 KB Output is correct
16 Correct 1195 ms 98136 KB Output is correct
17 Correct 1285 ms 90524 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 9984 KB Output is correct
2 Correct 13 ms 9984 KB Output is correct
3 Correct 14 ms 9984 KB Output is correct
4 Correct 16 ms 9984 KB Output is correct
5 Correct 10 ms 9984 KB Output is correct
6 Correct 10 ms 9984 KB Output is correct
7 Correct 10 ms 10112 KB Output is correct
8 Correct 9 ms 9984 KB Output is correct
9 Correct 10 ms 9984 KB Output is correct
10 Correct 16 ms 11264 KB Output is correct
11 Correct 33 ms 11264 KB Output is correct
12 Correct 17 ms 11264 KB Output is correct
13 Correct 18 ms 11392 KB Output is correct
14 Correct 16 ms 11392 KB Output is correct
15 Correct 17 ms 11392 KB Output is correct
16 Correct 1669 ms 92036 KB Output is correct
17 Correct 1273 ms 94376 KB Output is correct
18 Correct 1200 ms 92736 KB Output is correct
19 Correct 1239 ms 91664 KB Output is correct
20 Correct 1247 ms 91712 KB Output is correct
21 Correct 1405 ms 91712 KB Output is correct
22 Correct 1180 ms 90448 KB Output is correct
23 Correct 943 ms 94316 KB Output is correct
24 Correct 662 ms 92636 KB Output is correct
25 Correct 509 ms 90456 KB Output is correct
26 Correct 542 ms 91356 KB Output is correct
27 Correct 582 ms 91064 KB Output is correct
28 Correct 1104 ms 98172 KB Output is correct
29 Correct 1124 ms 98268 KB Output is correct
30 Correct 1196 ms 98140 KB Output is correct
31 Correct 1195 ms 98136 KB Output is correct
32 Correct 1285 ms 90524 KB Output is correct
33 Correct 1528 ms 91756 KB Output is correct
34 Correct 477 ms 39804 KB Output is correct
35 Correct 1428 ms 94016 KB Output is correct
36 Correct 1458 ms 92296 KB Output is correct
37 Correct 1399 ms 93084 KB Output is correct
38 Correct 1514 ms 92700 KB Output is correct
39 Correct 1360 ms 97756 KB Output is correct
40 Correct 995 ms 110728 KB Output is correct
41 Correct 971 ms 99312 KB Output is correct
42 Correct 762 ms 98968 KB Output is correct
43 Correct 1267 ms 108056 KB Output is correct
44 Correct 1119 ms 101064 KB Output is correct
45 Correct 793 ms 106472 KB Output is correct
46 Correct 891 ms 105900 KB Output is correct
47 Correct 1113 ms 106156 KB Output is correct
48 Correct 1138 ms 105968 KB Output is correct
49 Correct 1097 ms 106260 KB Output is correct
50 Correct 1095 ms 106036 KB Output is correct
51 Correct 907 ms 110024 KB Output is correct
52 Correct 861 ms 109908 KB Output is correct