Submission #1049089

# Submission time Handle Problem Language Result Execution time Memory
1049089 2024-08-08T13:17:00 Z Halit Rectangles (IOI19_rect) C++17
72 / 100
3072 ms 1048576 KB
#include "rect.h"
#include <bits/stdc++.h>

struct FenwickTree {
  std::vector<int> bit;
  int N;
  FenwickTree(int n) {
    N = n+1;
    bit.resize(N+1);
  }
  int sum(int idx) {
    int res = 0;
    for (++idx; idx > 0; idx -= idx & -idx) {
      res += bit[idx];
    }
    return res;
  }
  int get(int l, int r) {
    return sum(r) - sum(l-1);
  }
  void add(int idx, int delta) {
    for (++idx;idx < N; idx += idx & -idx) {
      bit[idx] += delta;
    }
  }
};

struct SegmentTree {
  int N;
  std::vector<int> tree;
  std::vector<int> lazy;
  SegmentTree(int n) {
    N = n;
    tree.resize(4*N);
    lazy.resize(4*N);
  }
  void push(int node, int left, int right) {
    if (lazy[node]) {
      tree[node] = 0;
    }
    if (left != right) {
      lazy[node*2] |= lazy[node];
      lazy[node*2+1] |= lazy[node];
    }
    lazy[node] = 0;
  }
  int get(int node, int left, int right, int tl, int tr) {
    push(node, left, right);
    if (left > tr || right < tl) {
      return 0;
    }
    if (left >= tl && right <= tr) {
      return tree[node];
    }
    return get(node*2, left, (left+right)/2, tl, tr) + get(node*2+1, (left+right)/2+1, right, tl, tr);
  }
  void add(int node, int left, int right, int idx) {
    push(node, left, right);
    if (left > idx || right < idx) {
      return;
    }
    if (left == idx && right == idx) {
      tree[node] += 1;
      return;
    }
    add(node*2, left, (left+right)/2, idx);
    add(node*2+1, (left+right)/2+1, right, idx);
    tree[node] = tree[node*2] + tree[node*2+1];
  }
  void clear() {
    lazy[1] = 1;
  }
  int get(int left, int right) {
    return get(1, 0, N-1, left, right);
  }
  void add(int idx) {
    add(1, 0, N-1, idx);
  }
};
 
struct disjoint_sets {
  int N;
  std::vector<int> rank;
  disjoint_sets(int n) {
    N = n;
    for (int i = 0;i < N; ++i) {
      rank.push_back(i);
    }
  }
  int get(int x) {
    if (rank[x] == x) return x;
    return rank[x] = get(rank[x]);
  }
  void merge(int x, int y) {
    x = get(x);
    y = get(y);
    if (x == y) {
      return;
    }
    rank[y] = rank[x];
  }
  void clear() {
    for (int i = 0;i < N; ++i) {
      rank[i] = i;
    }
  }
};
long long count_rectangles(std::vector<std::vector<int>> a) {
  int N = a.size();
  int M = a[0].size();
  std::set<std::array<int, 3>> temp_valid_row, temp_valid_col;
  {
    std::vector<int> idx(M);
    std::iota(idx.begin(), idx.end(), 0);
    disjoint_sets left(M), right(M);
    for (int i = 1;i < N-1; ++i) {
      left.clear(); right.clear();
      std::sort(idx.begin(), idx.end(), [&](int j, int k) { return a[i][j] < a[i][k]; });
      int first = 0;
      std::vector<bool> act(M);
      for (int jj = 0;jj < M; ++jj) {
        int j = idx[jj];
        act[j] = true;
        if (j > 0 && act[j-1]) {
          left.merge(j-1, j);
          right.merge(j, j-1);
        }
        if (j+1 < M && act[j+1]) {
          right.merge(j+1, j);
          left.merge(j, j+1);
        }
        if (jj+1 < M && a[i][idx[jj+1]] == a[i][j]) {
          continue;
        } else {
          for (int k = first;k <= jj; ++k) {
            if (left.get(idx[k]) > 0 && right.get(idx[k]) < M-1) {
              temp_valid_row.insert({i, left.get(idx[k]), right.get(idx[k])});
            }
          }
          first = jj+1;
        }
      }
    }
  }
    /*
    for (int val : num) {
      for (int j : idx[val]) {
        act[j] = true;
        if (j > 0 && act[j-1]) {
          left.merge(j-1, j);
          right.merge(j, j-1);
        } 
        if (j+1 < M && act[j+1]) {
          right.merge(j+1, j);
          left.merge(j, j+1);
        }
      }
      for (int j : idx[val]) {
        if (left.get(j) > 0 && right.get(j) < M-1) {
          temp_valid_row.insert({i, left.get(j), right.get(j)});
        }
      }
    }
    */
  {
    std::vector<int> idx(N);
    std::iota(idx.begin(), idx.end(), 0);
    disjoint_sets left(N), right(N);
    for (int j = 1;j < M-1; ++j) {
      left.clear(); right.clear();
      std::sort(idx.begin(), idx.end(), [&](int i, int k) { return a[i][j] < a[k][j]; });
      int first = 0;
      std::vector<bool> act(N);
      for (int imi = 0;imi < N; ++imi) {
        int i = idx[imi];
        act[i] = true;
        if (i > 0 && act[i-1]) {
          left.merge(i-1, i);
          right.merge(i, i-1);
        }
        if (i+1 < N && act[i+1]) {
          right.merge(i+1, i);
          left.merge(i, i+1);
        }
        if (imi+1 < N && a[idx[imi+1]][j] == a[i][j]) {
          continue;
        } else {
          for (int k = first;k <= imi; ++k) {
            if (left.get(idx[k]) > 0 && right.get(idx[k]) < N-1) {
              // std::cout << i+1 << ' ' << j+1 << ' ' << left.get(idx[k]) << ' ' << right.get(idx[k]) << std::endl;
              temp_valid_col.insert({j, left.get(idx[k]), right.get(idx[k])});
            }
          }
          first = imi+1;
        }
      }
    }
  }
    /*
  for (int j = 1;j < M-1; ++j) {
    disjoint_sets up(N), down(N);
    std::set<int> num;
    std::map<int, std::vector<int>> idx;
    for (int i = 0;i < N; ++i) {
      num.insert(a[i][j]);
      idx[a[i][j]].push_back(i);
    }
    std::vector<bool> act(N);
    for (int val : num) {
      for (int i : idx[val]) {
        act[i] = true;
        if (i > 0 && act[i-1]) {
          up.merge(i-1, i);
          down.merge(i, i-1);
        } 
        if (i+1 < N && act[i+1]) {
          down.merge(i+1, i);
          up.merge(i, i+1);
        }
      }
      for (int i : idx[val]) {
        if (up.get(i) > 0 && down.get(i) < N-1) {
          temp_valid_col.insert({j, up.get(i), down.get(i)});
        }
      }
    }
  }
  */
  std::vector<std::array<int, 3>> valid_row(temp_valid_row.begin(), temp_valid_row.end());
  std::vector<std::array<int, 3>> valid_col(temp_valid_col.begin(), temp_valid_col.end());
  /*
  std::cout << "Valid Rows" << std::endl;
  for (auto [row, left, right] : valid_row) {
    std::cout << row+1 << ' ' << left+1 << ' ' << right+1 << std::endl;
  }
  std::cout << "Valid Columns" << std::endl;
  for (auto [col, up, down] : valid_col) {
    std::cout << col+1 << ' ' << up+1 << ' ' << down+1 << std::endl;
  }*/
  std::reverse(valid_row.begin(), valid_row.end());
  std::reverse(valid_col.begin(), valid_col.end());
  std::vector<int> row_value(valid_row.size()), col_value(valid_col.size());
  std::vector start(2, std::vector(std::max(N, M), std::vector<std::vector<int>>(std::max(N, M))));
  {
    std::vector last(M+1, std::vector(M+1, int(-1))), dp(M+1, std::vector(M+1, int(0)));
    for (int i = 0;i < valid_row.size(); ++i) {
      auto [row, left, right] = valid_row[i];
      row_value[i] = dp[left][right] = (last[left][right] != row+1 ? 1 : dp[left][right] + 1);
      start[0][row][left].push_back(i);
      last[left][right] = row;
      // std::cout << row+1 << ' ' << left+1 << ' ' << right+1 << " -> row value " << row_value[i] << std::endl;
    }
  }
  {
    std::vector last(N+1, std::vector(N+1, int(-1))), dp(N+1, std::vector(N+1, int(0)));
    for (int i = 0;i < valid_col.size(); ++i) {
      auto [col, up, down] = valid_col[i];
      col_value[i] = dp[up][down] = (last[up][down] != col+1 ? 1 : dp[up][down] + 1);
      start[1][up][col].push_back(i);
      last[up][down] = col;
      // std::cout << col+1 << ' ' << up+1 << ' ' << down+1 << " -> column value " << col_value[i] << std::endl;
    }
  }
  int ans = 0;
  constexpr int MAX = 2500;
  // SegmentTree st(MAX+1);
  FenwickTree fenw(MAX);
  for (int x = 1;x < N-1; ++x) {
    for (int y = 1;y < M-1; ++y) {
      // std::cout << "Current : " << x+1 << ' ' << y+1 << std::endl;
      auto &row = start[0][x][y];
      auto &col = start[1][x][y];
      if (row.size() == 0 || col.size() == 0) {
        continue;
      }
      std::vector<int> idx_row(row.size()), idx_col(col.size());
      std::iota(idx_row.begin(), idx_row.end(), 0);
      std::iota(idx_col.begin(), idx_col.end(), 0);
      std::sort(idx_row.begin(), idx_row.end(), [&](int i, int j) { return row_value[row[i]] < row_value[row[j]]; });
      std::sort(idx_col.begin(), idx_col.end(), [&](int i, int j) { return valid_col[col[i]][2] < valid_col[col[j]][2]; });
      int j = -1;
      int cnt = 0;
      std::vector<int> rollback;
      // std::cout << "#Rows : " << k_row << '\t' << "#Columns : " << k_col << std::endl;
      for (int i : idx_row) {
        // std::cout << "Current row : " << valid_row[start[0][x][y][i]][0]+1 << ' ' << valid_row[start[0][x][y][i]][1]+1 << ' ' << valid_row[start[0][x][y][i]][2]+1 << std::endl;
        while (j+1 < col.size() && valid_col[col[idx_col[j+1]]][2] - valid_col[col[idx_col[j+1]]][1] + 1 <= row_value[row[i]]) {
          j += 1;
          // st.add(col_value[col[idx_col[j]]]);
          fenw.add(col_value[col[idx_col[j]]], +1);
          rollback.push_back(col_value[col[idx_col[j]]]);
          // std::cout << j << "-th column to Segment Tree (value : " << col_value[j] << " )" << std::endl;
        }
        // cnt += st.get(valid_row[row[i]][2] - valid_row[row[i]][1] + 1, MAX);
        cnt += fenw.get(valid_row[row[i]][2] - valid_row[row[i]][1] + 1, MAX);
      }
      ans += cnt;
      for (int op : rollback) {
        fenw.add(op, -1);
      }
      // st.clear();
    }   
  } 
  /*
  int ans = 0;
  for (int i = 0;i < valid_row.size(); ++i) {
    auto [row, left, right] = valid_row[i];
    // std::cout << "Current row : " << row + 1 << ' ' << left + 1 << ' ' << right + 1 << std::endl;
    for (int j : start[1][row][left]) {
      // std::cout << "Testing..." << std::endl;
      // std::cout << valid_col[j][0] + 1 << ' ' << valid_col[j][1] + 1 << ' ' << valid_col[j][2] + 1 << std::endl;
      if (valid_col[j][2] - valid_col[j][1] + 1 <= row_value[i] && (right - left + 1 <= col_value[j])) {
        ans += 1;
        // std::cout << "OK!" << std::endl;
      }
    }
    // std::cout << std::endl;
  }*/
  return ans;
}

Compilation message

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:246:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 3> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  246 |     for (int i = 0;i < valid_row.size(); ++i) {
      |                    ~~^~~~~~~~~~~~~~~~~~
rect.cpp:256:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 3> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  256 |     for (int i = 0;i < valid_col.size(); ++i) {
      |                    ~~^~~~~~~~~~~~~~~~~~
rect.cpp:287:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  287 |         while (j+1 < col.size() && valid_col[col[idx_col[j+1]]][2] - valid_col[col[idx_col[j+1]]][1] + 1 <= row_value[row[i]]) {
      |                ~~~~^~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 5 ms 2140 KB Output is correct
23 Correct 3 ms 2140 KB Output is correct
24 Correct 4 ms 2140 KB Output is correct
25 Correct 3 ms 1116 KB Output is correct
26 Correct 4 ms 1668 KB Output is correct
27 Correct 4 ms 1884 KB Output is correct
28 Correct 4 ms 1628 KB Output is correct
29 Correct 2 ms 1116 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 5 ms 2140 KB Output is correct
18 Correct 3 ms 2140 KB Output is correct
19 Correct 4 ms 2140 KB Output is correct
20 Correct 3 ms 1116 KB Output is correct
21 Correct 4 ms 1668 KB Output is correct
22 Correct 4 ms 1884 KB Output is correct
23 Correct 4 ms 1628 KB Output is correct
24 Correct 2 ms 1116 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 21 ms 11356 KB Output is correct
31 Correct 22 ms 11356 KB Output is correct
32 Correct 26 ms 11356 KB Output is correct
33 Correct 15 ms 5976 KB Output is correct
34 Correct 26 ms 9816 KB Output is correct
35 Correct 29 ms 10088 KB Output is correct
36 Correct 28 ms 9552 KB Output is correct
37 Correct 24 ms 9308 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 5 ms 2140 KB Output is correct
18 Correct 3 ms 2140 KB Output is correct
19 Correct 4 ms 2140 KB Output is correct
20 Correct 3 ms 1116 KB Output is correct
21 Correct 4 ms 1668 KB Output is correct
22 Correct 4 ms 1884 KB Output is correct
23 Correct 4 ms 1628 KB Output is correct
24 Correct 2 ms 1116 KB Output is correct
25 Correct 21 ms 11356 KB Output is correct
26 Correct 22 ms 11356 KB Output is correct
27 Correct 26 ms 11356 KB Output is correct
28 Correct 15 ms 5976 KB Output is correct
29 Correct 26 ms 9816 KB Output is correct
30 Correct 29 ms 10088 KB Output is correct
31 Correct 28 ms 9552 KB Output is correct
32 Correct 24 ms 9308 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 193 ms 84540 KB Output is correct
39 Correct 189 ms 78332 KB Output is correct
40 Correct 178 ms 78364 KB Output is correct
41 Correct 181 ms 77140 KB Output is correct
42 Correct 365 ms 137936 KB Output is correct
43 Correct 383 ms 137920 KB Output is correct
44 Correct 385 ms 138064 KB Output is correct
45 Correct 326 ms 130128 KB Output is correct
46 Correct 176 ms 57940 KB Output is correct
47 Correct 229 ms 70824 KB Output is correct
48 Correct 568 ms 121044 KB Output is correct
49 Correct 577 ms 121936 KB Output is correct
50 Correct 226 ms 74576 KB Output is correct
51 Correct 220 ms 74064 KB Output is correct
52 Correct 534 ms 114248 KB Output is correct
53 Correct 511 ms 114516 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 182 ms 441424 KB Output is correct
2 Correct 131 ms 318364 KB Output is correct
3 Correct 177 ms 440904 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 179 ms 441356 KB Output is correct
6 Correct 177 ms 441172 KB Output is correct
7 Correct 176 ms 441172 KB Output is correct
8 Correct 175 ms 441172 KB Output is correct
9 Correct 172 ms 441172 KB Output is correct
10 Correct 175 ms 441080 KB Output is correct
11 Correct 178 ms 441112 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 600 KB Output is correct
7 Correct 1309 ms 514388 KB Output is correct
8 Correct 2966 ms 732496 KB Output is correct
9 Correct 3072 ms 734160 KB Output is correct
10 Correct 2991 ms 734036 KB Output is correct
11 Correct 406 ms 465240 KB Output is correct
12 Correct 693 ms 486996 KB Output is correct
13 Correct 672 ms 490160 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 5 ms 2140 KB Output is correct
18 Correct 3 ms 2140 KB Output is correct
19 Correct 4 ms 2140 KB Output is correct
20 Correct 3 ms 1116 KB Output is correct
21 Correct 4 ms 1668 KB Output is correct
22 Correct 4 ms 1884 KB Output is correct
23 Correct 4 ms 1628 KB Output is correct
24 Correct 2 ms 1116 KB Output is correct
25 Correct 21 ms 11356 KB Output is correct
26 Correct 22 ms 11356 KB Output is correct
27 Correct 26 ms 11356 KB Output is correct
28 Correct 15 ms 5976 KB Output is correct
29 Correct 26 ms 9816 KB Output is correct
30 Correct 29 ms 10088 KB Output is correct
31 Correct 28 ms 9552 KB Output is correct
32 Correct 24 ms 9308 KB Output is correct
33 Correct 193 ms 84540 KB Output is correct
34 Correct 189 ms 78332 KB Output is correct
35 Correct 178 ms 78364 KB Output is correct
36 Correct 181 ms 77140 KB Output is correct
37 Correct 365 ms 137936 KB Output is correct
38 Correct 383 ms 137920 KB Output is correct
39 Correct 385 ms 138064 KB Output is correct
40 Correct 326 ms 130128 KB Output is correct
41 Correct 176 ms 57940 KB Output is correct
42 Correct 229 ms 70824 KB Output is correct
43 Correct 568 ms 121044 KB Output is correct
44 Correct 577 ms 121936 KB Output is correct
45 Correct 226 ms 74576 KB Output is correct
46 Correct 220 ms 74064 KB Output is correct
47 Correct 534 ms 114248 KB Output is correct
48 Correct 511 ms 114516 KB Output is correct
49 Correct 182 ms 441424 KB Output is correct
50 Correct 131 ms 318364 KB Output is correct
51 Correct 177 ms 440904 KB Output is correct
52 Correct 0 ms 344 KB Output is correct
53 Correct 179 ms 441356 KB Output is correct
54 Correct 177 ms 441172 KB Output is correct
55 Correct 176 ms 441172 KB Output is correct
56 Correct 175 ms 441172 KB Output is correct
57 Correct 172 ms 441172 KB Output is correct
58 Correct 175 ms 441080 KB Output is correct
59 Correct 178 ms 441112 KB Output is correct
60 Correct 0 ms 600 KB Output is correct
61 Correct 1309 ms 514388 KB Output is correct
62 Correct 2966 ms 732496 KB Output is correct
63 Correct 3072 ms 734160 KB Output is correct
64 Correct 2991 ms 734036 KB Output is correct
65 Correct 406 ms 465240 KB Output is correct
66 Correct 693 ms 486996 KB Output is correct
67 Correct 672 ms 490160 KB Output is correct
68 Correct 0 ms 348 KB Output is correct
69 Correct 0 ms 348 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Runtime error 2423 ms 1048576 KB Execution killed with signal 9
74 Halted 0 ms 0 KB -