oj.uz

Submission #672043

# Submission time Handle Problem Language Result Execution time Memory
672043 2022-12-14T16:22:51 Z Vahe Rainforest Jumps (APIO21_jumps) C++17
0 / 100
 4000 ms 22136 KB 
#include "jumps.h"
#include <iostream>
#include <algorithm>
#include <vector>
#include <stack>
using namespace std;
int n, a, b, c, d;;
vector<int> h, pge, nge, dp;
vector<vector<int>> gp;
 
vector<int> pge_(vector<int> v)
{
    vector<int> tmp(v.size());
    stack<int> s;
    s.push(0);
    tmp[0] = -1;
    for (int i = 1; i < v.size(); i++)
    {
        while (!s.empty() && v[s.top()] < v[i]) s.pop();
        tmp[i] = (s.empty() ? -1 : s.top());
    }
    return tmp;
}
vector<int> nge_(vector<int> v)
{
    stack<int> s;
    vector<int> tmp(v.size(), -1);
    for (int i = 0; i < n; i++)
    {
        while (!s.empty() && v[s.top()] < v[i]) tmp[s.top()] = i, s.pop();
        s.push(i);
    }
    return tmp;
}
 
void dfs(int u)
{
    if (u >= c && u <= d) { dp[u] = 0; return; }
    if (dp[u] != 2e9) return;
 
    if (gp[u].size() > 0) dfs(gp[u][0]);
    if (gp[u].size() > 1) dfs(gp[u][1]);
 
    int x = (gp[u].size() > 0 ? dp[gp[u][0]] : 2e9);
    int y = (gp[u].size() > 1 ? dp[gp[u][1]] : 2e9);
    dp[u] = min(x, y) + 1;
}
 
void init(int N, vector<int> H)
{
    n = N;
    h = H;
    pge = pge_(H);
    nge = nge_(H);
    gp = vector<vector<int>>(n);
    for (int i = 0; i < n; i++)
    {
        if (pge[i] != -1) gp[i].push_back(pge[i]);
        if (nge[i] != -1) gp[i].push_back(nge[i]);
    }
}
 
int minimum_jumps(int A, int B, int C, int D)
{
    a = A, b = B, c = C, d = D;
    dp = vector<int>(n, 2e9);
    int mn = 2e9;
    for (int i = a; i <= b; i++) dfs(i), mn = min(mn, dp[i]);
    return (mn >= 2e9 ? -1 : mn);
}

Compilation message

jumps.cpp: In function 'std::vector<int> pge_(std::vector<int>)':
jumps.cpp:17:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for (int i = 1; i < v.size(); i++)
      |                     ~~^~~~~~~~~~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Execution timed out 4034 ms 17724 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 2 ms 208 KB Output is correct
6 Incorrect 2 ms 208 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 2 ms 208 KB Output is correct
6 Incorrect 2 ms 208 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 32 ms 12888 KB Output is correct
6 Correct 60 ms 15916 KB Output is correct
7 Correct 18 ms 7864 KB Output is correct
8 Correct 42 ms 15868 KB Output is correct
9 Correct 6 ms 2640 KB Output is correct
10 Correct 54 ms 15884 KB Output is correct
11 Correct 48 ms 22136 KB Output is correct
12 Correct 45 ms 19068 KB Output is correct
13 Incorrect 41 ms 20328 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Incorrect 1089 ms 7380 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Incorrect 1089 ms 7380 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Execution timed out 4034 ms 17724 KB Time limit exceeded
4 Halted 0 ms 0 KB -