Submission #1047451

#	Time	Username	Problem	Language	Result	Execution time	Memory
1047451		SN0WM4N	Rainforest Jumps (APIO21_jumps)	C++14	0 / 100	4080 ms	3512 KiB

jumps

#include "jumps.h"

#include <bits/stdc++.h>
using namespace std;

vector<int> v;
vector<int> m_sig;

void init(int N, std::vector<int> H) {
        v = H;
        m_sig.resize(N);

        int mx = 1e9, idx = -1;

        for (int i = N - 1; i >= 0; i --) {
                m_sig[i] = i;
                for (int j = i; j < N; j ++) {
                        if (H[j] > H[i]) {
                                m_sig[i] = j;
                                break;
                        }
                }
        }
}

int minimum_jumps(int A, int B, int C, int D) {
        int mx = -1, idx = -1;
        for (int i = A; i <= B; i ++) {
                if (v[i] > mx) {
                        mx = v[i];
                        idx = i;
                }
        }

        int ans = 0;
        while (idx < C) {
                ans ++;
                if (idx == m_sig[idx])
                        break;
                idx = m_sig[idx];
        }

        if (C <= idx && idx <= D) 
                return ans;
        return -1;
}

Compilation message (stderr)

jumps.cpp: In function 'void init(int, std::vector<int>)':
jumps.cpp:13:13: warning: unused variable 'mx' [-Wunused-variable]
   13 |         int mx = 1e9, idx = -1;
      |             ^~
jumps.cpp:13:23: warning: unused variable 'idx' [-Wunused-variable]
   13 |         int mx = 1e9, idx = -1;
      |                       ^~~

• 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