oj.uz

답안 #1037437

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1037437 2024-07-28T21:11:45 Z aaaaaarroz 늑대인간 (IOI18_werewolf) C++17
100 / 100
 621 ms 134004 KB 
#include "werewolf.h"
#include <bits/stdc++.h>
using namespace std;
struct SegmentTree{
  int n;
  vector<vector<int>> t;
  void init(int _n){
    n=_n;
    t.assign(4*n+1, {});
  }
  void build(int k, int l, int r, const vector<int> &a){
    if (l==r){
      t[k].push_back(a[l]);
      return;
    }
    int mid=(l+r)>>1;
    build(k<<1, l, mid, a);
    build(k<<1|1, mid+1, r, a);
    t[k].resize(t[k<<1].size()+t[k<<1|1].size());
    merge(t[k<<1].begin(), t[k<<1].end(), t[k<<1|1].begin(), t[k<<1|1].end(), t[k].begin());
  }
  bool get(int k, int l, int r, int L, int R, int x, int y){
    if (r<L || R<l) return 0;
    if (L<=l && r<=R){
      return upper_bound(t[k].begin(), t[k].end(), y)!=lower_bound(t[k].begin(), t[k].end(), x);
    }
    int mid=(l+r)>>1;
    return get(k<<1, l, mid, L, R, x, y) || get(k<<1|1, mid+1, r, L, R, x, y);
  }
} st;
const int N=2e5+10, LG=18;
struct DSU{
  int n;
  vector<int> lab;
  vector<int> g[N];
  int tin[N], tout[N], tdfs;
  int up[LG][N];
  void init(int _n, int root){
    n=_n;
    lab.assign(n+1, -1);
    memset(tin, 0, sizeof tin);
    memset(tout, 0, sizeof tout);
    tdfs=-1;
    up[0][root]=root;
  }
  int find_set(int u){
    return lab[u]<0?u:lab[u]=find_set(lab[u]);
  }
  void union_sets(int u, int v){
    v=find_set(v);
    if (v!=u){
      up[0][v]=u;
      g[u].push_back(v);
      lab[u]+=lab[v];
      lab[v]=u;
    }
  }
  void dfs(int u){
    for (int k=1; k<LG; ++k) up[k][u]=up[k-1][up[k-1][u]];
    tin[u]=++tdfs;
    for (int v:g[u]) dfs(v);
    tout[u]=tdfs;
  }
} dsu1, dsu2;
vector<int> g[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) {
  int M=X.size();
  for (int i=0; i<M; ++i) g[X[i]].push_back(Y[i]), g[Y[i]].push_back(X[i]);
  int Q=S.size();
  dsu1.init(N, 0);
  for (int i=N-1; i>=0; --i){
    for (int j:g[i]) if (j>i) dsu1.union_sets(i, j);
  }
  dsu2.init(N, N-1);
  for (int i=0; i<N; ++i){
    for (int j:g[i]) if (j<i) dsu2.union_sets(i, j);
  }
  dsu1.dfs(0);
  dsu2.dfs(N-1);
  st.init(N);
  vector<int> a(N);
  for (int i=0; i<N; ++i) a[dsu2.tin[i]]=dsu1.tin[i];
  st.build(1, 0, N-1, a);
  vector<int> ans(Q);
  for (int i=0; i<Q; ++i){
    for (int j=LG-1; j>=0; --j) if (dsu1.up[j][S[i]]>=L[i]) S[i]=dsu1.up[j][S[i]];
    for (int j=LG-1; j>=0; --j) if (dsu2.up[j][E[i]]<=R[i]) E[i]=dsu2.up[j][E[i]];
    ans[i]=st.get(1, 0, N-1, dsu2.tin[E[i]], dsu2.tout[E[i]], dsu1.tin[S[i]], dsu1.tout[S[i]]);
  }
  return ans;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 45660 KB Output is correct
2 Correct 5 ms 45756 KB Output is correct
3 Correct 5 ms 45656 KB Output is correct
4 Correct 5 ms 45660 KB Output is correct
5 Correct 5 ms 45660 KB Output is correct
6 Correct 5 ms 45656 KB Output is correct
7 Correct 6 ms 45712 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 7 ms 45660 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 45660 KB Output is correct
2 Correct 5 ms 45756 KB Output is correct
3 Correct 5 ms 45656 KB Output is correct
4 Correct 5 ms 45660 KB Output is correct
5 Correct 5 ms 45660 KB Output is correct
6 Correct 5 ms 45656 KB Output is correct
7 Correct 6 ms 45712 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 7 ms 45660 KB Output is correct
10 Correct 9 ms 46680 KB Output is correct
11 Correct 10 ms 46684 KB Output is correct
12 Correct 9 ms 46620 KB Output is correct
13 Correct 10 ms 46684 KB Output is correct
14 Correct 10 ms 46680 KB Output is correct
15 Correct 12 ms 46684 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 434 ms 115556 KB Output is correct
2 Correct 379 ms 117332 KB Output is correct
3 Correct 417 ms 124504 KB Output is correct
4 Correct 410 ms 123988 KB Output is correct
5 Correct 425 ms 123980 KB Output is correct
6 Correct 502 ms 124240 KB Output is correct
7 Correct 398 ms 123732 KB Output is correct
8 Correct 377 ms 125804 KB Output is correct
9 Correct 354 ms 124496 KB Output is correct
10 Correct 288 ms 123988 KB Output is correct
11 Correct 321 ms 123984 KB Output is correct
12 Correct 364 ms 123984 KB Output is correct
13 Correct 460 ms 130644 KB Output is correct
14 Correct 422 ms 130520 KB Output is correct
15 Correct 464 ms 130644 KB Output is correct
16 Correct 478 ms 130640 KB Output is correct
17 Correct 399 ms 123740 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 45660 KB Output is correct
2 Correct 5 ms 45756 KB Output is correct
3 Correct 5 ms 45656 KB Output is correct
4 Correct 5 ms 45660 KB Output is correct
5 Correct 5 ms 45660 KB Output is correct
6 Correct 5 ms 45656 KB Output is correct
7 Correct 6 ms 45712 KB Output is correct
8 Correct 7 ms 45660 KB Output is correct
9 Correct 7 ms 45660 KB Output is correct
10 Correct 9 ms 46680 KB Output is correct
11 Correct 10 ms 46684 KB Output is correct
12 Correct 9 ms 46620 KB Output is correct
13 Correct 10 ms 46684 KB Output is correct
14 Correct 10 ms 46680 KB Output is correct
15 Correct 12 ms 46684 KB Output is correct
16 Correct 434 ms 115556 KB Output is correct
17 Correct 379 ms 117332 KB Output is correct
18 Correct 417 ms 124504 KB Output is correct
19 Correct 410 ms 123988 KB Output is correct
20 Correct 425 ms 123980 KB Output is correct
21 Correct 502 ms 124240 KB Output is correct
22 Correct 398 ms 123732 KB Output is correct
23 Correct 377 ms 125804 KB Output is correct
24 Correct 354 ms 124496 KB Output is correct
25 Correct 288 ms 123988 KB Output is correct
26 Correct 321 ms 123984 KB Output is correct
27 Correct 364 ms 123984 KB Output is correct
28 Correct 460 ms 130644 KB Output is correct
29 Correct 422 ms 130520 KB Output is correct
30 Correct 464 ms 130644 KB Output is correct
31 Correct 478 ms 130640 KB Output is correct
32 Correct 399 ms 123740 KB Output is correct
33 Correct 526 ms 123988 KB Output is correct
34 Correct 197 ms 77180 KB Output is correct
35 Correct 575 ms 126032 KB Output is correct
36 Correct 509 ms 124240 KB Output is correct
37 Correct 532 ms 125268 KB Output is correct
38 Correct 494 ms 124724 KB Output is correct
39 Correct 621 ms 130608 KB Output is correct
40 Correct 497 ms 133968 KB Output is correct
41 Correct 427 ms 124924 KB Output is correct
42 Correct 309 ms 124496 KB Output is correct
43 Correct 434 ms 130384 KB Output is correct
44 Correct 508 ms 125268 KB Output is correct
45 Correct 436 ms 130984 KB Output is correct
46 Correct 403 ms 130388 KB Output is correct
47 Correct 430 ms 130928 KB Output is correct
48 Correct 433 ms 130640 KB Output is correct
49 Correct 437 ms 130920 KB Output is correct
50 Correct 455 ms 130640 KB Output is correct
51 Correct 486 ms 134004 KB Output is correct
52 Correct 517 ms 133712 KB Output is correct