Submission #297428

#	Time	Username	Problem	Language	Result	Execution time	Memory
297428		kevlee	Wall (IOI14_wall)	C++17	24 / 100	412 ms	20856 KiB

wall

#include "wall.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mod 1000000007
#define h1 7897897897897897
#define h2 7897466719774591
#define b1 98762051
#define b2 98765431
#define inf 1000000000
#define pi 3.1415926535897932384626
#define LMAX 9223372036854775807
#define ll long long
#define fi first
#define se second
#define pii pair<int, int>
#define pll pair<ll, ll>
#define vi vector<int>
#define vl vector<ll>
#define vp vector<pii>
#define SET(a, b) memset(a, b, sizeof(a))
#define all(x) (x).begin(), (x).end()
#define FOR(i, a, b) for (int i = (a); i <= (b); i++)
#define FORD(i, a, b) for (int i = (a); i >= (b); i--)

int seg[8000005], h, ans[2000005];
void update_add(int id, int l, int r, int ql, int qr) {
  if (ql > r || qr < l) return;
  if (ql <= l && r <= qr) {
    seg[id] = max(seg[id], h);
    return;
  }
  int mid = (l + r) >> 1;
  update_add(id * 2, l, mid, ql, qr);
  update_add(id * 2 + 1, mid + 1, r, ql, qr);
}
void update_remove(int id, int l, int r, int ql, int qr) {
  if (ql > r || qr < l) return;
  if (ql <= l && r <= qr) {
    seg[id] = min(seg[id], h);
    return;
  }
  int mid = (l + r) >> 1;
  update_remove(id * 2, l, mid, ql, qr);
  update_remove(id * 2 + 1, mid + 1, r, ql, qr);
}
void propagate_add(int id, int l, int r) {
  if (l == r) {
    return;
  }
  int mid = (l + r) >> 1;
  seg[id * 2] = max(seg[id * 2], seg[id]);
  seg[id * 2 + 1] = max(seg[id * 2 + 1], seg[id]);
  propagate_add(id * 2, l, mid);
  propagate_add(id * 2 + 1, mid + 1, r);
  seg[id] = 1e9;
}
void propagate_remove(int id, int l, int r) {
  if (l == r) {
    ans[l] = seg[id];
    return;
  }
  int mid = (l + r) >> 1;
  seg[id * 2] = min(seg[id * 2], seg[id]);
  seg[id * 2 + 1] = min(seg[id * 2 + 1], seg[id]);
  propagate_remove(id * 2, l, mid);
  propagate_remove(id * 2 + 1, mid + 1, r);
}
void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
  bool remove = false;
  FOR(i, 0, k-1) {
    left[i]++;
    right[i]++;
    h = height[i];
    if (op[i] == 1) {
      update_add(1, 1, n, left[i], right[i]);
    } else {
      if (!remove) {
        remove = true;
        propagate_add(1, 1, n);
      }
      update_remove(1, 1, n, left[i], right[i]);
    }
  }
  propagate_remove(1, 1, n);
  FOR(i, 0, n-1) finalHeight[i] = ans[i+1];
  return;
}

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