Submission #824964

#	Time	Username	Problem	Language	Result	Execution time	Memory
824964		LittleCube	Radio Towers (IOI22_towers)	C++17	0 / 100	388 ms	1360 KiB

towers

#include "towers.h"
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define F first
#define S second
using namespace std;

namespace 
{
  int N, k = 0, ono = 0;
  vector<int> H;
  vector<int> contract;
  void init()
  {
    while(k + 1 < N && H[k] < H[k + 1])
      k++;
    if(k == 0 || k == N - 1)
      ono = 1;
    else
    {
      contract.resize(N);
      for (int i = k - 1; i >= 0; i--)
        contract[i] = max(contract[i + 1], H[i + 1] - H[i]);
      for (int i = k + 1; i < N; i++)
        contract[i] = max(contract[i - 1], H[i - 1] - H[i]);
    }
  }
}

void init(int _N, vector<int> _H) {
  N = _N;
  H = _H;
  init();
}

int max_towers(int L, int R, int D) {
  if(R <= k || k <= L || ono)
    return 1;
  else if(contract[L] > D && contract[R] > D)
    return 2;
  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