oj.uz

Submission #264755

# Submission time Handle Problem Language Result Execution time Memory
264755 2020-08-14T09:10:39 Z Bruteforceman Rectangles (IOI19_rect) C++14
72 / 100
 5000 ms 753268 KB 
#include "bits/stdc++.h"
#include "rect.h"
using namespace std;
const int maxn = 2505;
struct rect {
  int i, j;
  int l, r;
  rect (int i, int j, int l, int r) : i(i), j(j), l(l), r(r) {}
  rect () {}
};
vector <pair <int, int>> ver[maxn][maxn], hor[maxn][maxn];
int t[maxn];
vector <int> v[maxn];

vector <rect> getLines(vector<vector<int>> &a) {
  int n = a.size();
  int m = a.front().size();
  vector <rect> vert;
  for(int i = 0; i < m; i++) v[i].clear();
  set <int> last, aux;
  vector <int> arr (n);
  for(int i = 0; i < n; i++) {
    last.clear();
    fill(arr.begin(), arr.end(), -1);
    for(int j = 0; j < m; j++) {
      aux.clear();
      for(int k = int(v[j].size()) - 1; k >= 0; k--) {
        aux.insert(v[j][k]);
        if(a[v[j][k]][j] >= a[i][j]) break;
      }
      while(!v[j].empty() && a[v[j].back()][j] <= a[i][j]) {
        v[j].pop_back();
      }
      v[j].push_back(i);
      for(int k : last) {
        if(aux.find(k) == aux.end()) {
          if(k < i - 1) vert.emplace_back(k, i, arr[k], j - 1);
          arr[k] = -1;
        }
      }
      for(int k : aux) {
        if(arr[k] == -1) arr[k] = j;
      }
      last = aux;
    }
    for(int k : last) {
      if(k < i - 1) vert.emplace_back(k, i, arr[k], m - 1);
    }
  }
	return vert;
}
void rotate(vector <vector <int>> &a) {
  int n = a.size();
  int m = a.front().size();
  vector <vector <int>> b (m, vector <int> (n, 0));
  for(int i = 0; i < m; i++) {
    for(int j = 0; j < n; j++) {
      b[i][j] = a[j][i];
    }
  }
  a = b;
}
void update(int x, int val) {
  x += 1;
  for(int i = x; i < maxn; i += i & (-i)) {
    t[i] += val;
  }
}
int query(int x) {
  x += 1;
  int sum = 0;
  for(int i = x; i > 0; i -= i & (-i)) {
    sum += t[i];
  }
  return sum;
}
long long solve(int i, int j) {
  long long ans = 0;
  auto cmp = [&] (pair <int, int> i, pair <int, int> j) {
    return i.second < j.second;
  };
  sort(hor[i][j].begin(), hor[i][j].end(), cmp);
  sort(ver[i][j].begin(), ver[i][j].end(), cmp);
  int pt = 0;
  for(auto y : ver[i][j]) {
    while(pt < hor[i][j].size() && hor[i][j][pt].second <= y.second) {
      update(hor[i][j][pt].first, 1); 
      ++pt;
    }
    ans += query(2500) - query(y.first - 1);
  }
  for(int y = 0; y < pt; y++) update(hor[i][j][y].first, -1);
  return ans;
}
long long count_rectangles(vector <vector <int>> a) {
  int n = a.size();
  int m = a.front().size();
  auto h = getLines(a);
  rotate(a);
  auto v = getLines(a);
  for(auto &x : v) {
    int aux = x.l;
    x.l = max(0, x.l - 1);
    x.r = min(n - 1, x.r + 1);
    for(int i = x.l; i <= x.r; i++) {
      ver[i][x.j].emplace_back(x.l, x.i);
    }
  }
  for(auto &x : h) {
    int aux = x.l;
    x.l = max(0, x.l - 1);
    x.r = min(m - 1, x.r + 1);
    for(int i = x.l; i <= x.r; i++) {
      hor[x.j][i].emplace_back(x.i, x.l);
    }
  }
  long long ans = 0;
  for(int i = 0; i < n; i++) {
    for(int j = 0; j < m; j++) {
      ans += solve(i, j);
    }
  }
  return ans;
}

Compilation message

rect.cpp: In function 'long long int solve(int, int)':
rect.cpp:86:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   86 |     while(pt < hor[i][j].size() && hor[i][j][pt].second <= y.second) {
      |           ~~~^~~~~~~~~~~~~~~~~~
rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:102:9: warning: unused variable 'aux' [-Wunused-variable]
  102 |     int aux = x.l;
      |         ^~~
rect.cpp:110:9: warning: unused variable 'aux' [-Wunused-variable]
  110 |     int aux = x.l;
      |         ^~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 186 ms 295032 KB Output is correct
2 Correct 197 ms 295160 KB Output is correct
3 Correct 189 ms 295160 KB Output is correct
4 Correct 217 ms 295160 KB Output is correct
5 Correct 217 ms 295160 KB Output is correct
6 Correct 182 ms 295160 KB Output is correct
7 Correct 211 ms 295160 KB Output is correct
8 Correct 181 ms 295160 KB Output is correct
9 Correct 180 ms 295160 KB Output is correct
10 Correct 182 ms 295160 KB Output is correct
11 Correct 185 ms 295160 KB Output is correct
12 Correct 192 ms 295144 KB Output is correct
13 Correct 207 ms 295068 KB Output is correct
14 Correct 188 ms 295032 KB Output is correct
15 Correct 195 ms 295124 KB Output is correct
16 Correct 186 ms 295032 KB Output is correct
17 Correct 188 ms 295032 KB Output is correct
18 Correct 213 ms 295028 KB Output is correct
19 Correct 194 ms 295160 KB Output is correct
20 Correct 212 ms 295032 KB Output is correct
21 Correct 181 ms 295108 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 186 ms 295032 KB Output is correct
2 Correct 197 ms 295160 KB Output is correct
3 Correct 189 ms 295160 KB Output is correct
4 Correct 217 ms 295160 KB Output is correct
5 Correct 217 ms 295160 KB Output is correct
6 Correct 182 ms 295160 KB Output is correct
7 Correct 211 ms 295160 KB Output is correct
8 Correct 181 ms 295160 KB Output is correct
9 Correct 180 ms 295160 KB Output is correct
10 Correct 182 ms 295160 KB Output is correct
11 Correct 185 ms 295160 KB Output is correct
12 Correct 192 ms 295144 KB Output is correct
13 Correct 207 ms 295068 KB Output is correct
14 Correct 188 ms 295032 KB Output is correct
15 Correct 195 ms 295124 KB Output is correct
16 Correct 186 ms 295032 KB Output is correct
17 Correct 230 ms 295416 KB Output is correct
18 Correct 205 ms 295344 KB Output is correct
19 Correct 189 ms 295360 KB Output is correct
20 Correct 182 ms 295544 KB Output is correct
21 Correct 189 ms 295800 KB Output is correct
22 Correct 188 ms 295800 KB Output is correct
23 Correct 186 ms 295800 KB Output is correct
24 Correct 201 ms 295452 KB Output is correct
25 Correct 188 ms 295032 KB Output is correct
26 Correct 213 ms 295028 KB Output is correct
27 Correct 194 ms 295160 KB Output is correct
28 Correct 212 ms 295032 KB Output is correct
29 Correct 181 ms 295108 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 186 ms 295032 KB Output is correct
2 Correct 197 ms 295160 KB Output is correct
3 Correct 189 ms 295160 KB Output is correct
4 Correct 217 ms 295160 KB Output is correct
5 Correct 217 ms 295160 KB Output is correct
6 Correct 182 ms 295160 KB Output is correct
7 Correct 211 ms 295160 KB Output is correct
8 Correct 181 ms 295160 KB Output is correct
9 Correct 180 ms 295160 KB Output is correct
10 Correct 182 ms 295160 KB Output is correct
11 Correct 185 ms 295160 KB Output is correct
12 Correct 192 ms 295144 KB Output is correct
13 Correct 207 ms 295068 KB Output is correct
14 Correct 188 ms 295032 KB Output is correct
15 Correct 195 ms 295124 KB Output is correct
16 Correct 186 ms 295032 KB Output is correct
17 Correct 230 ms 295416 KB Output is correct
18 Correct 205 ms 295344 KB Output is correct
19 Correct 189 ms 295360 KB Output is correct
20 Correct 182 ms 295544 KB Output is correct
21 Correct 189 ms 295800 KB Output is correct
22 Correct 188 ms 295800 KB Output is correct
23 Correct 186 ms 295800 KB Output is correct
24 Correct 201 ms 295452 KB Output is correct
25 Correct 232 ms 296664 KB Output is correct
26 Correct 205 ms 296660 KB Output is correct
27 Correct 229 ms 296788 KB Output is correct
28 Correct 207 ms 297808 KB Output is correct
29 Correct 287 ms 299984 KB Output is correct
30 Correct 228 ms 299912 KB Output is correct
31 Correct 217 ms 299264 KB Output is correct
32 Correct 215 ms 299220 KB Output is correct
33 Correct 188 ms 295032 KB Output is correct
34 Correct 213 ms 295028 KB Output is correct
35 Correct 194 ms 295160 KB Output is correct
36 Correct 212 ms 295032 KB Output is correct
37 Correct 181 ms 295108 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 186 ms 295032 KB Output is correct
2 Correct 197 ms 295160 KB Output is correct
3 Correct 189 ms 295160 KB Output is correct
4 Correct 217 ms 295160 KB Output is correct
5 Correct 217 ms 295160 KB Output is correct
6 Correct 182 ms 295160 KB Output is correct
7 Correct 211 ms 295160 KB Output is correct
8 Correct 181 ms 295160 KB Output is correct
9 Correct 180 ms 295160 KB Output is correct
10 Correct 182 ms 295160 KB Output is correct
11 Correct 185 ms 295160 KB Output is correct
12 Correct 192 ms 295144 KB Output is correct
13 Correct 207 ms 295068 KB Output is correct
14 Correct 188 ms 295032 KB Output is correct
15 Correct 195 ms 295124 KB Output is correct
16 Correct 186 ms 295032 KB Output is correct
17 Correct 230 ms 295416 KB Output is correct
18 Correct 205 ms 295344 KB Output is correct
19 Correct 189 ms 295360 KB Output is correct
20 Correct 182 ms 295544 KB Output is correct
21 Correct 189 ms 295800 KB Output is correct
22 Correct 188 ms 295800 KB Output is correct
23 Correct 186 ms 295800 KB Output is correct
24 Correct 201 ms 295452 KB Output is correct
25 Correct 232 ms 296664 KB Output is correct
26 Correct 205 ms 296660 KB Output is correct
27 Correct 229 ms 296788 KB Output is correct
28 Correct 207 ms 297808 KB Output is correct
29 Correct 287 ms 299984 KB Output is correct
30 Correct 228 ms 299912 KB Output is correct
31 Correct 217 ms 299264 KB Output is correct
32 Correct 215 ms 299220 KB Output is correct
33 Correct 432 ms 325888 KB Output is correct
34 Correct 431 ms 328800 KB Output is correct
35 Correct 433 ms 328704 KB Output is correct
36 Correct 464 ms 331616 KB Output is correct
37 Correct 496 ms 313748 KB Output is correct
38 Correct 475 ms 313756 KB Output is correct
39 Correct 495 ms 313752 KB Output is correct
40 Correct 515 ms 313208 KB Output is correct
41 Correct 390 ms 320872 KB Output is correct
42 Correct 476 ms 327516 KB Output is correct
43 Correct 670 ms 351472 KB Output is correct
44 Correct 785 ms 351968 KB Output is correct
45 Correct 424 ms 323824 KB Output is correct
46 Correct 427 ms 323772 KB Output is correct
47 Correct 657 ms 342232 KB Output is correct
48 Correct 611 ms 342808 KB Output is correct
49 Correct 188 ms 295032 KB Output is correct
50 Correct 213 ms 295028 KB Output is correct
51 Correct 194 ms 295160 KB Output is correct
52 Correct 212 ms 295032 KB Output is correct
53 Correct 181 ms 295108 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 204 ms 295836 KB Output is correct
2 Correct 186 ms 295672 KB Output is correct
3 Correct 189 ms 295544 KB Output is correct
4 Correct 185 ms 295160 KB Output is correct
5 Correct 202 ms 295928 KB Output is correct
6 Correct 222 ms 295800 KB Output is correct
7 Correct 222 ms 295796 KB Output is correct
8 Correct 195 ms 295800 KB Output is correct
9 Correct 221 ms 295800 KB Output is correct
10 Correct 218 ms 295416 KB Output is correct
11 Correct 214 ms 295544 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 184 ms 295032 KB Output is correct
2 Correct 1514 ms 442956 KB Output is correct
3 Correct 3357 ms 615972 KB Output is correct
4 Correct 3300 ms 617120 KB Output is correct
5 Correct 3288 ms 617288 KB Output is correct
6 Correct 755 ms 344184 KB Output is correct
7 Correct 1292 ms 366716 KB Output is correct
8 Correct 1364 ms 369784 KB Output is correct
9 Correct 188 ms 295032 KB Output is correct
10 Correct 213 ms 295028 KB Output is correct
11 Correct 194 ms 295160 KB Output is correct
12 Correct 212 ms 295032 KB Output is correct
13 Correct 181 ms 295108 KB Output is correct

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 186 ms 295032 KB Output is correct
2 Correct 197 ms 295160 KB Output is correct
3 Correct 189 ms 295160 KB Output is correct
4 Correct 217 ms 295160 KB Output is correct
5 Correct 217 ms 295160 KB Output is correct
6 Correct 182 ms 295160 KB Output is correct
7 Correct 211 ms 295160 KB Output is correct
8 Correct 181 ms 295160 KB Output is correct
9 Correct 180 ms 295160 KB Output is correct
10 Correct 182 ms 295160 KB Output is correct
11 Correct 185 ms 295160 KB Output is correct
12 Correct 192 ms 295144 KB Output is correct
13 Correct 207 ms 295068 KB Output is correct
14 Correct 188 ms 295032 KB Output is correct
15 Correct 195 ms 295124 KB Output is correct
16 Correct 186 ms 295032 KB Output is correct
17 Correct 230 ms 295416 KB Output is correct
18 Correct 205 ms 295344 KB Output is correct
19 Correct 189 ms 295360 KB Output is correct
20 Correct 182 ms 295544 KB Output is correct
21 Correct 189 ms 295800 KB Output is correct
22 Correct 188 ms 295800 KB Output is correct
23 Correct 186 ms 295800 KB Output is correct
24 Correct 201 ms 295452 KB Output is correct
25 Correct 232 ms 296664 KB Output is correct
26 Correct 205 ms 296660 KB Output is correct
27 Correct 229 ms 296788 KB Output is correct
28 Correct 207 ms 297808 KB Output is correct
29 Correct 287 ms 299984 KB Output is correct
30 Correct 228 ms 299912 KB Output is correct
31 Correct 217 ms 299264 KB Output is correct
32 Correct 215 ms 299220 KB Output is correct
33 Correct 432 ms 325888 KB Output is correct
34 Correct 431 ms 328800 KB Output is correct
35 Correct 433 ms 328704 KB Output is correct
36 Correct 464 ms 331616 KB Output is correct
37 Correct 496 ms 313748 KB Output is correct
38 Correct 475 ms 313756 KB Output is correct
39 Correct 495 ms 313752 KB Output is correct
40 Correct 515 ms 313208 KB Output is correct
41 Correct 390 ms 320872 KB Output is correct
42 Correct 476 ms 327516 KB Output is correct
43 Correct 670 ms 351472 KB Output is correct
44 Correct 785 ms 351968 KB Output is correct
45 Correct 424 ms 323824 KB Output is correct
46 Correct 427 ms 323772 KB Output is correct
47 Correct 657 ms 342232 KB Output is correct
48 Correct 611 ms 342808 KB Output is correct
49 Correct 204 ms 295836 KB Output is correct
50 Correct 186 ms 295672 KB Output is correct
51 Correct 189 ms 295544 KB Output is correct
52 Correct 185 ms 295160 KB Output is correct
53 Correct 202 ms 295928 KB Output is correct
54 Correct 222 ms 295800 KB Output is correct
55 Correct 222 ms 295796 KB Output is correct
56 Correct 195 ms 295800 KB Output is correct
57 Correct 221 ms 295800 KB Output is correct
58 Correct 218 ms 295416 KB Output is correct
59 Correct 214 ms 295544 KB Output is correct
60 Correct 184 ms 295032 KB Output is correct
61 Correct 1514 ms 442956 KB Output is correct
62 Correct 3357 ms 615972 KB Output is correct
63 Correct 3300 ms 617120 KB Output is correct
64 Correct 3288 ms 617288 KB Output is correct
65 Correct 755 ms 344184 KB Output is correct
66 Correct 1292 ms 366716 KB Output is correct
67 Correct 1364 ms 369784 KB Output is correct
68 Correct 3934 ms 655636 KB Output is correct
69 Correct 4335 ms 704244 KB Output is correct
70 Correct 3785 ms 706452 KB Output is correct
71 Correct 4148 ms 753268 KB Output is correct
72 Execution timed out 5079 ms 521448 KB Time limit exceeded
73 Halted 0 ms 0 KB -