Submission #1061642

#	Time	Username	Problem	Language	Result	Execution time	Memory
1061642		MarwenElarbi	Radio Towers (IOI22_towers)	C++17	0 / 100	454 ms	1748 KiB

towers

#include <bits/stdc++.h>
using namespace std;
#include "towers.h"
#define pb push_back
#define ll long long
#define fi first
#define se second
int k=-1,n;
vector<int> tab;
void init(int N, std::vector<int> H) {
  n=N;
  for (int i = 0; i < N; ++i)
  {
    tab.pb(H[i]);
  }
  for (int i = 0; i < N-1; ++i)
  {
    if(tab[i]>tab[i+1]){
      k=i;
      break;
    }
  }
}

int max_towers(int L, int R, int D){
  if(L>=k||R<=k) return 1;
  int l=L-1;
  int r=k;
  while(r-l>1){
    int mid=(r+l)/2;
    if(tab[mid]>tab[k]-D) r=mid;
    else l=mid;
  }
  int a=l;
  l=k;
  r=R+1;
  while(r-l>1){
    int mid=(r+l)/2;
    if(tab[mid]>tab[k]-D) l=mid;
    else r=mid;
  }
  if(a==L-1||r==R+1) return 1;
  int ans=max(1,a-L+1+R-r+1);
  return ans;
}

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