Submission #1223554

#	Time	Username	Problem	Language	Result	Execution time	Memory
1223554		trimkus	Radio Towers (IOI22_towers)	C++20	4 / 100	262 ms	2200 KiB

towers

#include "towers.h"

#include <bits/stdc++.h>
using namespace std;
vector<int> a;
vector<int> R, L;
int idx;
int N;
void init(int _N, std::vector<int> _H) {
  N = _N;
  a = _H;
  for (int i = 1; i < N; ++i) {
      if (a[i] > a[i - 1]) {
        idx = i;
      }
  }
  for (int i = 0; i < idx; ++i) {
    L.push_back(a[i]);
  }
  for (int i = idx + 1; i < N; ++i) {
    R.push_back(a[i]);
  }
  reverse(begin(R), end(R));
}

int max_towers(int l, int r, int D) {
    int res = 0;
    if (l < idx && idx < r) {
        if (a[l] + D <= a[idx]) res += 1;
        if (a[r] + D <= a[idx]) res += 1;
    } else {
        if (idx < r) {
          if (a[r] + D <= a[idx]) res += 1;
        } else if (l < idx) {
          if (a[l] + D <= a[idx]) res += 1;
        }
    }
    res = max(res, 1);
    return res;
}

• Subtask 1: 4 / 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