제출 #1008896

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1008896		Cookie	밀림 점프 (APIO21_jumps)	C++14	37 / 100	4078 ms	16836 KiB

jumps

#include<bits/stdc++.h>
#include<fstream>
//#pragma GCC optimize("O3")
//#pragma GCC target("avx2")
using namespace std;
#define sz(a) (int)a.size()
#define ALL(v) v.begin(), v.end()
#define ALLR(v) v.rbegin(), v.rend()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
#define mpp make_pair
const ld PI = 3.14159265359, prec = 1e-9;;
//using u128 = __uint128_t;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, -1, 0, 1};
const ll mod = 1e9 + 7, pr = 31;
const int mxn = 2e5 + 5, mxd = 250 * 250, sq = 100, mxv = 5e4 + 1, mxq = 2e6 + 5, T = 1000;
//const int base = (1 <<18);
const ll inf = 2e9 + 5, neg = -69420, inf2 = 1e14;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

#include <vector>

#include <cassert>
#include <cstdio>
#include "jumps.h"

#include <vector>
int n;
bool sub1 = 1;
int h[mxn + 1], l[mxn + 1], r[mxn + 1], dis[mxn + 1];
vt<int>adj[mxn + 1];
void init(int N, std::vector<int> H) {
    n = N;
    for(int i = 1; i <= n; i++){
        h[i] = H[i - 1]; sub1 &= (h[i] == i);
    }
    vt<int>st;
    for(int i = 1; i <= n; i++){
        while(sz(st) && h[st.back()] <= h[i])st.pop_back();
        if(sz(st))l[i] = st.back();
        st.pb(i);
    }
    st.clear();
    for(int i = n; i >= 1; i--){
        while(sz(st) && h[st.back()] <= h[i])st.pop_back();
        if(sz(st))r[i] = st.back();
        st.pb(i);
    }
    for(int i = 1; i <= n; i++){
        if(l[i])adj[i].pb(l[i]); 
        if(r[i])adj[i].pb(r[i]);
    }
}

int minimum_jumps(int A, int B, int C, int D) {
    A++; B++; C++; D++;
    if(sub1)return(C - B);
    queue<int>q;
    for(int i = 1; i <= n; i++)dis[i] = -1;
    for(int i = A; i <= B; i++){
        dis[i] = 0; q.push(i);
    }
    while(!q.empty()){
        int nw = q.front(); q.pop();
        if(nw >= C && nw <= D)return(dis[nw]);
        for(auto i: adj[nw]){
            if(dis[i] == -1){
                dis[i] = dis[nw] + 1; q.push(i);
            }
        }
    }
    return -1;
}
/*
#include <vector>

int main() {
  int N, Q;
  assert(2 == scanf("%d %d", &N, &Q));
  std::vector<int> H(N);
  for (int i = 0; i < N; ++i) {
    assert(1 == scanf("%d", &H[i]));
  }
  init(N, H);

  for (int i = 0; i < Q; ++i) {
    int A, B, C, D;
    assert(4 == scanf("%d %d %d %d", &A, &B, &C, &D));
    printf("%d\n", minimum_jumps(A, B, C, D));
  }
  return 0;
}
*/

• Subtask 1: 4 / 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