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답안 #234970

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
234970 2020-05-26T13:10:26 Z AlexLuchianov Long Mansion (JOI17_long_mansion) C++14
100 / 100
 670 ms 94652 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <map>
#include <stack>

using namespace std;

using ll = long long;
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) < (b)) ? (b) : (a))

int const nmax = 500000;
int const lgmax = 20;

vector<int> keys[5 + nmax];
int path[5 + nmax];
int firstleft[5 + nmax], firstright[5 + nmax];

namespace RMQ{
  int lg[1 + nmax];
  int rmq[1 + lgmax][1 + nmax];
  void initialize(int n){
    for(int i = 2; i <= n; i++)
      lg[i] = lg[i / 2] + 1;
    for(int i = 1;i <= n; i++)
      rmq[0][i] = firstleft[i];
    for(int h = 1; h <= lgmax; h++)
      for(int i = 1;i <= n - (1 << h) + 1; i++)
        rmq[h][i] = min(rmq[h - 1][i], rmq[h - 1][i + (1 << (h - 1))]);
  }

  int extract(int x, int y){
    int h = lg[y - x];
    return min(rmq[h][x], rmq[h][y - (1 << h) + 1]);
  }
}

map<int,int> frec;

void _addset(int room){
  for(int i = 0; i < keys[room].size(); i++)
    frec[keys[room][i]] = room;
}

int sol[1 + nmax][2];

void expandright(int &x, int &y, int n){
  for(int jump = (1 << 20); 0 < jump; jump /= 2)
    if(y + jump <= n && x <= RMQ::extract(y + 1, y + jump))
      y += jump;
}

int main()
{
  ios::sync_with_stdio(0);
  cin.tie(0);

  int n;
  cin >> n;
  for(int i = 1;i < n; i++)
    cin >> path[i];
  for(int i = 1;i <= n; i++){
    int k;
    cin >> k;
    for(int j = 1;j <= k; j++){
      int val;
      cin >> val;
      keys[i].push_back(val);
    }
  }

  for(int i = 1; i <= n; i++) {
    firstleft[i] = frec[path[i - 1]];
    _addset(i);
  }
  frec.clear();

  for(int i = n; 1 <= i; i--){
    firstright[i] = frec[path[i]];
    if(firstright[i] == 0)
      firstright[i] = n + 1;
    _addset(i);
  }
  RMQ::initialize(n);

  for(int i = 1; i <= n; i++)
    sol[i][0] = sol[i][1] = i;

  stack<int> st;

  for(int i = 1; i <= n; i++){
    expandright(sol[i][0], sol[i][1], n);
    while(0 < st.size() && firstright[st.top()] <= sol[i][1]) {
      sol[i][0] = min(sol[i][0], sol[st.top()][0]);
      sol[i][1] = max(sol[i][1], sol[st.top()][1]);
      expandright(sol[i][0], sol[i][1], n);
      st.pop();
    }
    st.push(i);
  }

  int q;
  cin >> q;
  for(int i = 1; i <= q; i++){
    int x, y;
    cin >> x >> y;
    if(sol[x][0] <= y && y <= sol[x][1])
      cout << "YES\n";
    else
      cout << "NO\n";
  }
  return 0;
}

Compilation message

long_mansion.cpp: In function 'void _addset(int)':
long_mansion.cpp:43:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < keys[room].size(); i++)
                  ~~^~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 12416 KB Output is correct
2 Correct 14 ms 12672 KB Output is correct
3 Correct 15 ms 12800 KB Output is correct
4 Correct 15 ms 12544 KB Output is correct
5 Correct 14 ms 12544 KB Output is correct
6 Correct 15 ms 12536 KB Output is correct
7 Correct 14 ms 12544 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 12416 KB Output is correct
2 Correct 14 ms 12672 KB Output is correct
3 Correct 15 ms 12800 KB Output is correct
4 Correct 15 ms 12544 KB Output is correct
5 Correct 14 ms 12544 KB Output is correct
6 Correct 15 ms 12536 KB Output is correct
7 Correct 14 ms 12544 KB Output is correct
8 Correct 126 ms 18336 KB Output is correct
9 Correct 129 ms 18424 KB Output is correct
10 Correct 130 ms 18680 KB Output is correct
11 Correct 129 ms 19192 KB Output is correct
12 Correct 116 ms 17912 KB Output is correct
13 Correct 121 ms 18552 KB Output is correct
14 Correct 134 ms 18868 KB Output is correct
15 Correct 128 ms 18552 KB Output is correct
16 Correct 122 ms 18272 KB Output is correct
17 Correct 120 ms 18424 KB Output is correct
18 Correct 123 ms 18552 KB Output is correct
19 Correct 124 ms 18556 KB Output is correct
20 Correct 135 ms 18548 KB Output is correct
21 Correct 121 ms 18296 KB Output is correct
22 Correct 142 ms 18424 KB Output is correct
23 Correct 121 ms 18296 KB Output is correct
24 Correct 127 ms 18444 KB Output is correct
25 Correct 130 ms 18296 KB Output is correct
26 Correct 127 ms 18296 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 277 ms 31736 KB Output is correct
2 Correct 264 ms 33528 KB Output is correct
3 Correct 278 ms 33144 KB Output is correct
4 Correct 265 ms 33400 KB Output is correct
5 Correct 275 ms 33400 KB Output is correct
6 Correct 243 ms 32120 KB Output is correct
7 Correct 215 ms 31864 KB Output is correct
8 Correct 225 ms 32140 KB Output is correct
9 Correct 208 ms 31992 KB Output is correct
10 Correct 215 ms 31992 KB Output is correct
11 Correct 212 ms 31864 KB Output is correct

Subtask #4
75.0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 12416 KB Output is correct
2 Correct 14 ms 12672 KB Output is correct
3 Correct 15 ms 12800 KB Output is correct
4 Correct 15 ms 12544 KB Output is correct
5 Correct 14 ms 12544 KB Output is correct
6 Correct 15 ms 12536 KB Output is correct
7 Correct 14 ms 12544 KB Output is correct
8 Correct 126 ms 18336 KB Output is correct
9 Correct 129 ms 18424 KB Output is correct
10 Correct 130 ms 18680 KB Output is correct
11 Correct 129 ms 19192 KB Output is correct
12 Correct 116 ms 17912 KB Output is correct
13 Correct 121 ms 18552 KB Output is correct
14 Correct 134 ms 18868 KB Output is correct
15 Correct 128 ms 18552 KB Output is correct
16 Correct 122 ms 18272 KB Output is correct
17 Correct 120 ms 18424 KB Output is correct
18 Correct 123 ms 18552 KB Output is correct
19 Correct 124 ms 18556 KB Output is correct
20 Correct 135 ms 18548 KB Output is correct
21 Correct 121 ms 18296 KB Output is correct
22 Correct 142 ms 18424 KB Output is correct
23 Correct 121 ms 18296 KB Output is correct
24 Correct 127 ms 18444 KB Output is correct
25 Correct 130 ms 18296 KB Output is correct
26 Correct 127 ms 18296 KB Output is correct
27 Correct 277 ms 31736 KB Output is correct
28 Correct 264 ms 33528 KB Output is correct
29 Correct 278 ms 33144 KB Output is correct
30 Correct 265 ms 33400 KB Output is correct
31 Correct 275 ms 33400 KB Output is correct
32 Correct 243 ms 32120 KB Output is correct
33 Correct 215 ms 31864 KB Output is correct
34 Correct 225 ms 32140 KB Output is correct
35 Correct 208 ms 31992 KB Output is correct
36 Correct 215 ms 31992 KB Output is correct
37 Correct 212 ms 31864 KB Output is correct
38 Correct 638 ms 77200 KB Output is correct
39 Correct 559 ms 90104 KB Output is correct
40 Correct 485 ms 62336 KB Output is correct
41 Correct 451 ms 85984 KB Output is correct
42 Correct 307 ms 35192 KB Output is correct
43 Correct 293 ms 34040 KB Output is correct
44 Correct 514 ms 52216 KB Output is correct
45 Correct 544 ms 52984 KB Output is correct
46 Correct 554 ms 53656 KB Output is correct
47 Correct 320 ms 35296 KB Output is correct
48 Correct 288 ms 33316 KB Output is correct
49 Correct 486 ms 50040 KB Output is correct
50 Correct 497 ms 51576 KB Output is correct
51 Correct 555 ms 54564 KB Output is correct
52 Correct 422 ms 55928 KB Output is correct
53 Correct 540 ms 74104 KB Output is correct
54 Correct 670 ms 94652 KB Output is correct
55 Correct 532 ms 75480 KB Output is correct