Submission #917589

#	Time	Username	Problem	Language	Result	Execution time	Memory
917589		hariaakas646	Rainforest Jumps (APIO21_jumps)	C++14	33 / 100	4069 ms	15436 KiB

jumps

#include "jumps.h"
#include <bits/stdc++.h>
 
using namespace std;
 
#define scd(t) scanf("%d", &t)
#define sclld(t) scanf("%lld", &t)
#define forr(i, l, r) for(int i=l; i<r; i++)
#define frange(i, l) forr(i, 0, l)
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define all(x) x.begin(), x.end()
 
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef vector<pii> vii;
typedef long long lli;
typedef vector<vi> vvi;
typedef vector<lli> vll;
typedef vector<bool> vb;
typedef set<int> seti;
typedef multiset<int> mseti;

vvi graph;
int n;

void init(int N, std::vector<int> h) {
  n = N;
  graph = vvi(n);
  deque<int> dq;
  frange(i, n) {
    while(dq.size() && h[i] >= h[dq.back()]) dq.pop_back();
    if(dq.size()) graph[i].pb(dq.back());
    dq.pb(i);
  }

  dq = {};

  for(int i=n-1; i>=0; i--) {
    while(dq.size() && h[i] >= h[dq.back()]) dq.pop_back();
    if(dq.size()) graph[i].pb(dq.back());
    dq.pb(i);
  }

}

int minimum_jumps(int A, int B, int C, int D) {

  queue<pii> q;
  forr(i, A, B+1) q.push(mp(i, 0));
  vb vis(n);

  while(q.size()) {
    auto p = q.front();
    q.pop();

    if(C <= p.f && p.f <= D) return p.s;
    if(vis[p.f]) continue;
    vis[p.f] = true;

    for(auto e : graph[p.f]) {
      q.push(mp(e, p.s+1));
    }
  }

  return -1;
}

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