Submission #782012

#	Time	Username	Problem	Language	Result	Execution time	Memory
782012		FEDIKUS	Radio Towers (IOI22_towers)	C++17	14 / 100	844 ms	1864 KiB

towers

#include "towers.h"

#include <bits/stdc++.h>

using namespace std;

using mim = pair<pair<int,int>,int>;

const int maxn=1e5+10;
const int logg=18;

int n;
int h[maxn];
int pref[maxn];

void init(int _n, vector<int> _h) {
  n=_n;
  for(int i=0;i<n;i++) h[i]=_h[i];
  for(int i=1;i<n-1;i++){
    pref[i]=pref[i-1];
    if(h[i]<h[i+1] && h[i]<h[i-1]) pref[i]++;
  }
}

int max_towers(int l, int r, int d) {
  int ret=int(l==r);
  if(l+1<=r-1) ret+=pref[r-1]-pref[l];
  if(r-l>0 && h[l]<h[l+1]) ret++;
  if(r-l>0 && h[r]<h[r-1]) ret++;
  return ret;
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 11
• Subtask 3: 0 / 12
• Subtask 4: 14 / 14
• Subtask 5: 0 / 17
• Subtask 6: 0 / 19
• Subtask 7: 0 / 23