Submission #50178

#	Time	Username	Problem	Language	Result	Execution time	Memory
50178		Just_Solve_The_Problem	Wall (IOI14_wall)	C++11	32 / 100	2305 ms	299672 KiB

wall

#include <bits/stdc++.h>
#include "wall.h"

#define pb push_back
#define eb emplace_back
#define ll long long
#define pii pair < int, int >
#define fr first
#define sc second
#define mk make_pair
#define sz(s) (int)s.size()
#define all(s) s.begin(), s.end()
#define ok puts("ok");
#define whatis(x) cerr << #x << " = " << x << endl;
#define pause system("pause");
#define random (rand() ^ (rand() << 15))

using namespace std;

const int N = (int)2e6 + 7;

int n, c;
set < pii > in[N], er[N];
int a[N];

void buildWall(int nn, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
  n = nn;
  if (n <= 10000 && k <= 5000) {
    for (int i = 0; i < k; i++) {
      for (int j = left[i]; j <= right[i]; j++) {
        if (op[i] == 1) {
          a[j] = max(a[j], height[i]);
        } else {
          a[j] = min(a[j], height[i]);
        }
      }
    }
    for (int i = 0; i < n; i++) {
      finalHeight[i] = a[i];
    }
    return ;
  }
  for (int i = 0; i < k; i++) {
    if (op[i] == 2) break;
    in[left[i]].insert(mk(height[i], c));
    er[right[i] + 1].insert(mk(height[i], c++));
  }
  set < pii > cur;
  for (int i = 0; i < n; i++) {
    for (auto to : er[i])
      cur.erase(to);
    for (auto to : in[i])
      cur.insert(to);
    in[i].clear();
    er[i].clear();
    if (cur.empty()) continue;
    a[i] = cur.rbegin() -> fr;
  }
  cur.clear();
  for (int i = 0; i < k; i++) {
    if (op[i] == 1) continue;
    in[left[i]].insert(mk(height[i], c));
    er[right[i] + 1].insert(mk(height[i], c++));
  }
  for (int i = 0; i < n; i++) {
    for (auto to : er[i])
      cur.erase(to);
    for (auto to : in[i])
      cur.insert(to);
    in[i].clear();
    er[i].clear();
    if (cur.empty()) continue;
    a[i] = min(cur.begin() -> fr, a[i]);
  }

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

• Subtask 1: 8 / 8
• Subtask 2: 24 / 24
• Subtask 3: 0 / 29
• Subtask 4: 0 / 39