Submission #50671

#	Time	Username	Problem	Language	Result	Execution time	Memory
50671		Talant	Wall (IOI14_wall)	C++17	100 / 100	866 ms	201476 KiB

wall

#include "wall.h"

#include <bits/stdc++.h>

#define pb push_back
#define fr first
#define sc second
#define mk make_pair

using namespace std;

const int N = (int) 2e6 + 6;

int nn;

struct node {
      int mn,mx;
      node () {
            mx = 0,mn = 1e6 + 5;
      }
}t[N * 4];

void upd (int tp,int v,int h) {
      if (tp == 1) {
            t[v].mx = max(t[v].mx,h);
            t[v].mn = max(t[v].mn,h);
      }
      else {
            t[v].mn = min(t[v].mn,h);
            t[v].mx = min(t[v].mx,h);
      }
}
void push(int v) {
      upd(1,v + v,t[v].mx);
      upd(2,v + v,t[v].mn);
      upd(1,v + v + 1,t[v].mx);
      upd(2,v + v + 1,t[v].mn);

      t[v].mx = 0,t[v].mn = 1e6 + 5;
}
void update (int tp,int l,int r,int h,int v = 1,int tl = 0,int tr = nn - 1) {
      if (tl > r || tr < l) return ;

      if (l <= tl && tr <= r)
            upd(tp,v,h);
      else {
            push(v);
            int tm = (tl + tr) >> 1;
            update (tp,l,r,h,v + v,tl,tm);
            update (tp,l,r,h,v + v + 1,tm + 1,tr);
      }
}
void get(int finalHeight[],int v = 1,int tl = 0,int tr = nn - 1) {
      if (tl == tr)
            finalHeight[tl] = min(t[v].mx,t[v].mn);
      else {
            push(v);
            int tm = (tl + tr) >> 1;
            get(finalHeight,v + v,tl,tm);
            get(finalHeight,v + v + 1,tm + 1,tr);
      }
}
void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
      nn = n;

      for (int i = 0; i < k; i ++)
            update (op[i],left[i],right[i],height[i]);

      get(finalHeight);
}

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