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Submission #930533

# Submission time Handle Problem Language Result Execution time Memory
930533 2024-02-20T05:51:28 Z Der_Vlapos Wall (IOI14_wall) C++17
32 / 100
 3000 ms 186764 KB 
#include "wall.h"
#include <bits/stdc++.h>

using namespace std;

#define f first
#define s second
#define pii pair<int, int>
#define ll long long

const int BIG = 2e9 + 500;

struct segTree
{
  struct Node
  {
    deque<pii> ops;
  };
  vector<Node> tree;
  int sz;

  void init(int n)
  {
    sz = 1;
    while (sz < n)
      sz *= 2;
    tree.resize(2 * sz);
  }

  // 0 - min=
  // 1 - max=

  void upd(int v, int lv, int rv, pii op)
  {
    // cout << lv << " " << rv << " " << op.f << " " << op.s << "!!!\n";
    if (tree[v].ops.size() and op.f == tree[v].ops.back().f)
      tree[v].ops.back().s = (op.f == 0 ? min(op.s, tree[v].ops.back().s) : max(op.s, tree[v].ops.back().s));
    else if (tree[v].ops.size() < 2)
      tree[v].ops.push_back(op);
    else
    {
      if (op.f == 1)
      {
        int C1 = tree[v].ops.begin()->s;
        tree[v].ops.pop_front();
        int C2 = tree[v].ops.begin()->s;
        int C3 = op.s;
        tree[v].ops.push_back({1, max(min(C1, C2), C3)});
      }
      else
      {
        int C1 = tree[v].ops.begin()->s;
        tree[v].ops.pop_front();
        int C2 = tree[v].ops.begin()->s;
        int C3 = op.s;
        tree[v].ops.push_back({0, min(max(C1, C2), C3)});
      }
    }
    assert(tree[v].ops.size() <= 2);
  }

  void push(int v, int lv, int rv)
  {
    if (rv - lv == 1)
      return;
    int m = (lv + rv) >> 1;
    while (tree[v].ops.size())
    {
      pii op = tree[v].ops.front();
      tree[v].ops.pop_front();
      upd(v * 2 + 1, lv, m, op);
      upd(v * 2 + 2, m, rv, op);
    }
  }

  void addOp(int l, int r, pii op, int v, int lv, int rv)
  {
    push(v, lv, rv);
    if (l <= lv and rv <= r)
    {
      upd(v, lv, rv, op);
      return;
    }
    if (rv <= l or r <= lv)
      return;
    int m = (lv + rv) >> 1;
    addOp(l, r, op, v * 2 + 1, lv, m);
    addOp(l, r, op, v * 2 + 2, m, rv);
  }

  void addOp(int l, int r, pii op)
  {
    addOp(l, r, op, 0, 0, sz);
  }

  void outArray(vector<int> &a, int v, int lv, int rv)
  {
    push(v, lv, rv);
    if (rv - lv == 1)
    {
      if (lv < a.size())
      {
        while (tree[v].ops.size())
        {
          pii op = tree[v].ops.front();
          tree[v].ops.pop_front();
          a[lv] = op.f ? max(a[lv], op.s) : min(a[lv], op.s);
        }
      }
      return;
    }
    int m = (lv + rv) >> 1;
    outArray(a, v * 2 + 1, lv, m);
    outArray(a, v * 2 + 2, m, rv);
  }

  void outArray(vector<int> &a)
  {
    outArray(a, 0, 0, sz);
  }
};

void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[])
{
  vector<int> a;
  for (int i = 0; i < n; ++i)
    a.push_back(finalHeight[i]);

  segTree tree;
  tree.init(n);

  for (int i = 0; i < k; ++i)
  {
    op[i]--;
    tree.addOp(left[i], right[i] + 1, {1 - op[i], height[i]});
  }

  tree.outArray(a);

  for (int i = 0; i < n; ++i)
    finalHeight[i] = a[i];

  return;
}

Compilation message

wall.cpp: In member function 'void segTree::outArray(std::vector<int>&, int, int, int)':
wall.cpp:101:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  101 |       if (lv < a.size())
      |           ~~~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 3 ms 1116 KB Output is correct
4 Correct 30 ms 22672 KB Output is correct
5 Correct 23 ms 22620 KB Output is correct
6 Correct 26 ms 22616 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 100 ms 8176 KB Output is correct
3 Correct 441 ms 48332 KB Output is correct
4 Correct 2564 ms 186084 KB Output is correct
5 Correct 366 ms 185444 KB Output is correct
6 Correct 407 ms 185396 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 3 ms 1116 KB Output is correct
4 Correct 31 ms 22672 KB Output is correct
5 Correct 23 ms 22620 KB Output is correct
6 Correct 24 ms 22620 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 100 ms 8212 KB Output is correct
9 Correct 441 ms 48176 KB Output is correct
10 Correct 2552 ms 186256 KB Output is correct
11 Correct 376 ms 185524 KB Output is correct
12 Correct 359 ms 185352 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 105 ms 8048 KB Output is correct
15 Correct 128 ms 45156 KB Output is correct
16 Execution timed out 3069 ms 186764 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #4
0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 3 ms 1116 KB Output is correct
4 Correct 29 ms 22676 KB Output is correct
5 Correct 20 ms 22620 KB Output is correct
6 Correct 18 ms 22620 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 101 ms 8020 KB Output is correct
9 Correct 462 ms 47984 KB Output is correct
10 Correct 2376 ms 185984 KB Output is correct
11 Correct 364 ms 185404 KB Output is correct
12 Correct 361 ms 185504 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 105 ms 8068 KB Output is correct
15 Correct 127 ms 45140 KB Output is correct
16 Execution timed out 3055 ms 186724 KB Time limit exceeded
17 Halted 0 ms 0 KB -