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Submission #930551

# Submission time Handle Problem Language Result Execution time Memory
930551 2024-02-20T06:24:55 Z Der_Vlapos Wall (IOI14_wall) C++17
100 / 100
 603 ms 73560 KB 
// #pragma GCC target("avx2")
// #pragma GCC optimize("O3")

#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
  {
    int mx = 0, mn = BIG, last = 0;
  };

  vector<Node> tree;
  int sz;

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

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

  int C1, C2, C3;

  void upd(int v, pii op)
  {
    if (tree[v].last == op.f)
    {
      if (op.f == 1)
        tree[v].mx = max(tree[v].mx, op.s);
      else
        tree[v].mn = min(tree[v].mn, op.s);
    }
    else
    {
      if (op.f == 1)
      {
        C1 = tree[v].mx;
        C2 = tree[v].mn;
        C3 = op.s;
        tree[v].mx = max(min(C1, C2), C3);
      }
      else
      {
        C1 = tree[v].mn;
        C2 = tree[v].mx;
        C3 = op.s;
        tree[v].mn = min(max(C1, C2), C3);
      }
      tree[v].last = op.f;
    }
  }

  void push(int v)
  {
    if (tree[v].last == 0)
    {
      if (tree[v].mx != 0)
      {
        upd(v * 2 + 1, {1, tree[v].mx});
        upd(v * 2 + 2, {1, tree[v].mx});
      }
      if (tree[v].mn != BIG)
      {
        upd(v * 2 + 1, {0, tree[v].mn});
        upd(v * 2 + 2, {0, tree[v].mn});
      }
    }
    else
    {
      if (tree[v].mn != BIG)
      {
        upd(v * 2 + 1, {0, tree[v].mn});
        upd(v * 2 + 2, {0, tree[v].mn});
      }
      if (tree[v].mx != 0)
      {
        upd(v * 2 + 1, {1, tree[v].mx});
        upd(v * 2 + 2, {1, tree[v].mx});
      }
    }
    tree[v].mx = 0;
    tree[v].mn = BIG;
  }

  void addOp(int l, int r, pii &op, int v, int lv, int rv)
  {
    if (l <= lv and rv <= r)
    {
      upd(v, op);
      return;
    }
    if (rv <= l or r <= lv)
      return;
    int m = (lv + rv) >> 1;
    push(v);
    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)
  {
    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);
        // }
        if (tree[v].last == 0)
        {
          // cout << lv << " " << tree[v].mx << " | " << tree[v].mn << "!\n";
          a[lv] = max(a[lv], tree[v].mx);
          a[lv] = min(a[lv], tree[v].mn);
        }
        else
        {
          // cout << lv << " | " << v << " " << tree[v].mn << " " << tree[v].mx << "!\n";
          a[lv] = min(a[lv], tree[v].mn);
          a[lv] = max(a[lv], tree[v].mx);
        }
      }
      return;
    }
    int m = (lv + rv) >> 1;
    push(v);
    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;
}

// int main()
// {
//   int n;
//   int k;

//   int i, j;
//   int status = 0;

//   status = scanf("%d%d", &n, &k);
//   assert(status == 2);

//   int *op = (int *)calloc(sizeof(int), k);
//   int *left = (int *)calloc(sizeof(int), k);
//   int *right = (int *)calloc(sizeof(int), k);
//   int *height = (int *)calloc(sizeof(int), k);
//   int *finalHeight = (int *)calloc(sizeof(int), n);

//   for (i = 0; i < k; i++)
//   {
//     status = scanf("%d%d%d%d", &op[i], &left[i], &right[i], &height[i]);
//     assert(status == 4);
//   }

//   buildWall(n, k, op, left, right, height, finalHeight);

//   for (j = 0; j < n; j++)
//     printf("%d\n", finalHeight[j]);

//   return 0;
// }

Compilation message

wall.cpp: In member function 'void segTree::outArray(std::vector<int>&, int, int, int)':
wall.cpp:124:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  124 |       if (lv < a.size())
      |           ~~~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 348 KB Output is correct
4 Correct 5 ms 860 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 4 ms 860 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 105 ms 8312 KB Output is correct
3 Correct 116 ms 4700 KB Output is correct
4 Correct 341 ms 12080 KB Output is correct
5 Correct 192 ms 12044 KB Output is correct
6 Correct 183 ms 12020 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 6 ms 860 KB Output is correct
5 Correct 4 ms 856 KB Output is correct
6 Correct 4 ms 860 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 107 ms 8100 KB Output is correct
9 Correct 119 ms 4708 KB Output is correct
10 Correct 339 ms 12028 KB Output is correct
11 Correct 215 ms 12124 KB Output is correct
12 Correct 225 ms 12180 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 103 ms 8108 KB Output is correct
15 Correct 30 ms 1884 KB Output is correct
16 Correct 515 ms 12196 KB Output is correct
17 Correct 208 ms 12200 KB Output is correct
18 Correct 252 ms 12120 KB Output is correct

Subtask #4
39.0 / 39.0

# 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 1 ms 344 KB Output is correct
4 Correct 6 ms 860 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 5 ms 860 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 124 ms 8176 KB Output is correct
9 Correct 114 ms 4664 KB Output is correct
10 Correct 330 ms 12120 KB Output is correct
11 Correct 190 ms 12204 KB Output is correct
12 Correct 201 ms 12224 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 105 ms 8080 KB Output is correct
15 Correct 28 ms 1884 KB Output is correct
16 Correct 524 ms 12132 KB Output is correct
17 Correct 201 ms 12128 KB Output is correct
18 Correct 197 ms 12232 KB Output is correct
19 Correct 603 ms 73136 KB Output is correct
20 Correct 490 ms 73196 KB Output is correct
21 Correct 514 ms 73260 KB Output is correct
22 Correct 498 ms 73172 KB Output is correct
23 Correct 483 ms 73176 KB Output is correct
24 Correct 489 ms 73192 KB Output is correct
25 Correct 478 ms 73560 KB Output is correct
26 Correct 479 ms 73132 KB Output is correct
27 Correct 490 ms 73140 KB Output is correct
28 Correct 476 ms 73168 KB Output is correct
29 Correct 473 ms 73492 KB Output is correct
30 Correct 493 ms 73392 KB Output is correct