Submission #985518

#	Time	Username	Problem	Language	Result	Execution time	Memory
985518		mindiyak	Rainforest Jumps (APIO21_jumps)	C++14	8 / 100	4038 ms	67380 KiB

jumps

#include "jumps.h"

using namespace std;

#include <vector>
#include <queue>
#include <iostream>

#define NMAX 2010
// #define NMAX 7
#define INF 1e5
vector<vector<int>> costs(NMAX,vector<int>(NMAX,INF));
vector<vector<int>> paths(NMAX,vector<int>(NMAX,0));

void init(int N, std::vector<int> H) {
  for(int i = 0;i<N;i++)costs[i][i] = 0;

  for(int i = 0;i<N;i++){
    int pos = i+1;
    while(pos<N){
      if(H[i]<H[pos]){
        paths[i][pos] = 1;
        costs[i][pos] = 1;
        break;
      }pos++;
    }
    pos = i-1;
    while(pos>-1){
      if(H[i]<H[pos]){
        paths[i][pos] = 1;
        costs[i][pos] = 1;
        break;
      }pos--;
    }
  }

  // for(int i=0;i<costs.size();i++){
  //   for(int j=0;j<costs[i].size();j++){
  //     cout << costs[i][j] << " ";
  //   }cout << endl;
  // }

  // for(int i=0;i<N;i++){
  //   cout << i << " -> ";
  //   for(int j=0;j<paths[i].size();j++){
  //     cout << paths[i][j] << ",";
  //   }cout << endl;
  // }

  for(int i=0;i<N;i++){
    for(int j=0;j<N;j++){
      for(int k=0;k<N;k++){
        costs[i][j] = min(costs[i][j],costs[i][k]+costs[k][j]);
      }
    }
  }
  
  // for(int i=0;i<costs.size();i++){
  //   for(int j=0;j<costs[i].size();j++){
  //     cout << costs[i][j] << " ";
  //   }cout << endl;
  // }
}

int minimum_jumps(int A, int B, int C, int D) {
  int ans = INF;
  for(int i=A;i<=B;i++){
    for(int j=C;j<=D;j++){
      ans = min(ans,costs[i][j]);
    }
  }
  if(ans == INF)return -1;
  return ans;
}

• 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