Submission #1062879

#	Time	Username	Problem	Language	Result	Execution time	Memory
1062879		MarwenElarbi	Radio Towers (IOI22_towers)	C++17	14 / 100	683 ms	2252 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
const int nax=1e5+5;
int n;
vector<int> tab;
int pre[nax];
void init(int N, std::vector<int> H) {
  n=N;
  for (int i = 0; i < N; ++i)
  {
    tab.pb(H[i]);
  }
  for (int i = 1; i < n-1; ++i)
  {
    if(tab[i]<=tab[i-1]&&tab[i]<=tab[i+1]) pre[i]=1;
    pre[i]+=pre[i-1];
  }
  pre[n-1]+=pre[n-2];
}

int max_towers(int L, int R, int D){
  if(R-L+1<=2) return 1;
  return pre[R-1]-pre[L]+(tab[L]<=tab[L+1])+(tab[R]<=tab[R-1]);
}

• 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