Submission #984041

#	Time	Username	Problem	Language	Result	Execution time	Memory
984041		Marcus	Rainforest Jumps (APIO21_jumps)	C++17	8 / 100	16 ms	5208 KiB

jumps

#include "jumps.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;
int n;
vector<int> h;
const int INF = 2e6;
vector<vector<int>> adj(200, vector<int>(200, INF));
vector<vector<int>> dist(200, vector<int>(200, INF));
 
void init(int N, std::vector<int> H) {
    n = N;
    for (auto u: H) {h.push_back(u);}
    h.shrink_to_fit();

    for (int i=0; i<n; i++)
    {
        for (int j=i; j<n; j++)
        {
            if (h[i] < h[j]) {adj[i][j] = 1; break;};
        }
        for (int j=i; j>=0; j--)
        {
            if (h[i] < h[j]) {adj[i][j] = 1; break;};
        }
    }

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (i == j) dist[i][j] = 0;
            else if (adj[i][j]) dist[i][j] = adj[i][j];
            else dist[i][j] = INF;
        }
    }

    for (int k = 0; k < n; k++) {
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                dist[i][j] = min(dist[i][j], dist[i][k]+dist[k][j]);
            }
        }
    }


}

int minimum_jumps(int A, int B, int C, int D) {
  int answer = INF;
  for (int i=A; i<=B; i++)
  {
    for (int j=C; j<=D; j++)
    {
        answer = min(answer, dist[i][j]);
    }
  }
  return (answer >= INF ? -1 : answer);
}

• Subtask 1: 0 / 4
• Subtask 2: 8 / 8
• Subtask 3: 0 / 13
• Subtask 4: 0 / 12
• Subtask 5: 0 / 23
• Subtask 6: 0 / 21
• Subtask 7: 0 / 19