Submission #960633

#	Time	Username	Problem	Language	Result	Execution time	Memory
960633		Trisanu_Das	Rainforest Jumps (APIO21_jumps)	C++17	0 / 100	4074 ms	12552 KiB

jumps

#include "jumps.h"
#include<bits/stdc++.h>
using namespace std;
 
int n, dp[200005];
vector<int> h;
 
void init(int N, vector<int> H) {
    n = N;
    for(int i = 0; i < n; i++) h.push_back(H[i]);
}
 
int solve(int s, int c, int d) {
    if(c <= s && s <= d) return 0;
    if(dp[s] != -1) return dp[s];
    int ans = INT_MAX;
    for(int i = s + 1; i < n; i++){
        if(h[i] > h[s]){
            ans = min(ans, 1 + solve(i, c, d));
            break;
        }
    }
    for(int i = s - 1; i >= 0;i--){
        if(h[i] > h[s]){
            ans = min(ans, 1 + solve(i, c, d));
            break;
        }
    }
    return dp[s] = ans;
}
 
int minimum_jumps(int a, int b, int c, int d) {
  memset(dp, -1, sizeof(dp));
  int ans = INT_MAX;
  for(int i = a; i <= b; i++) ans = min(ans, solve(i, c, d));
  if(ans == INT_MAX) ans = -1;
  return ans;
}

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