Submission #1130685

#	Time	Username	Problem	Language	Result	Execution time	Memory
1130685		vibeduck	Radio Towers (IOI22_towers)	C++20	0 / 100	275 ms	1548 KiB

towers

#include "towers.h"

#include <vector>

int k = -1;
std::vector<int> Hh;

void init(int N, std::vector<int> H) {
  Hh = H;
  if (N == 1) return;
  if (N == 2) return;
  if (H[0] > H[1] || H[N - 2] < H[N - 1]) return;
  for (int i = 0; i < N; i++) {
    if (H[i] > H[i + 1]) {
      k = i;
      break;
    }
  }
  return;
}

int max_towers(int L, int R, int D) {
  if (k == -1) return 1;
  if (R - L + 1 < 3) return 1;
  if (L < k && k < R && Hh[k] - Hh[L] >= D && Hh[k] - Hh[R] >= D) return 3; 
  else return 1;
}

• 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