Submission #743523

#	Time	Username	Problem	Language	Result	Execution time	Memory
743523		onebit1024	Rainforest Jumps (APIO21_jumps)	C++17	4 / 100	953 ms	14408 KiB

jumps

#include "jumps.h"

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

// #define int long long
#define pb push_back
#define all(c) c.begin(), c.end()
#define endl "\n"

const double PI=3.141592653589;


void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");} 

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define dbg(x...) cerr << "LINE(" << __LINE__ << ") -> " <<"[" << #x << "] = ["; _print(x)
#else
#define dbg(x...)
#endif


vector<vector<int>>adj;
int n;
void init(int N, std::vector<int> H) {
  n = N;
  vector<int>a = {0};
  adj.resize(N+1);
  for(auto x : H)a.pb(x);
  stack<int>st;
  for(int i = 1;i<=N;++i){
    while(!st.empty() && a[i] > a[st.top()])st.pop();
    if(!st.empty())adj[i].pb(st.top());
    st.push(i);
  }
  while(!st.empty())st.pop();
  for(int i = N;i>=1;--i){
    while(!st.empty() && a[i] > a[st.top()])st.pop();
    if(!st.empty())adj[i].pb(st.top());
    st.push(i);
  }
}

int minimum_jumps(int A, int B, int C, int D) {
  return C-B;
  queue<int>q;
  vector<int>visited(n+1),dist(n+1,1e9);
  for(int i = A+1;i<=1+B;++i)q.push(i),dist[i] = 0;
  while(!q.empty()){  
    int u = q.front();
    q.pop();
    if(visited[u])continue;
    visited[u] = 1;
    for(int v : adj[u]){
      dist[v] = min(dist[v],dist[u]+1);
      q.push(v);
    }
  }
  int res = 1e9;  
  for(int i = C+1;i<=1+D;++i){
    res = min(res, dist[i]);
  }
  if(res >= 1e7)return -1;
  return res;
}

• Subtask 1: 4 / 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