Submission #1234376

#	Time	Username	Problem	Language	Result	Execution time	Memory
1234376		CELD_07	Rainforest Jumps (APIO21_jumps)	C++20	0 / 100	4034 ms	7796 KiB

jumps

#include "jumps.h"
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
typedef long long ll;
typedef long double ld;
#define endl "\n"
#define vll vector<ll>
#define sd second
#define ft first
#define all(x) x.begin(),x.end()
#define allr(x) x.rbegin(),x.rend()
#define pll pair<ll, ll>
#define mod 1000000007
#define _set tree<pll, null_type, less<pll>, rb_tree_tag, tree_order_statistics_node_update>
#define inf (ll)1e15
#define db(x) cout<<#x<<" : "<<x<<endl;
#define PRESICION(x) cout.setf(ios::fixed,ios::floatfield); cout.precision(x);
using namespace std;
using namespace __gnu_pbds;
ll dx[]={1, -1, 0, 0};
ll dy[]={0, 0, 1, -1};
inline ll sm(ll a, ll b){
return ((a%mod)+(b%mod))%mod;
}
inline ll ml(ll a, ll b){
return ((a%mod)*(b%mod))%mod;
}
inline ll rs(ll a, ll b){
return ((a%mod)-(b%mod)+mod)%mod;
}
ll bpow(ll a , ll b) {
if (b==0)return 1;
if (b%2!=0)return ((bpow(a, b-1)%mod)*(a%mod))%mod;
ll r=bpow (a ,b/ 2) ;
return ((r%mod)*(r%mod))%mod;
}
vector<ll> v, v1, v2;
void init(int N, vector<int> H) {
vector<ll>().swap(v);
vector<ll>().swap(v1);
vector<ll>().swap(v2);
stack<pair<ll, ll>> s;
v.assign(N, -1);
v1.assign(N, -1);
for(int i=0; i<N; i++)v2.push_back(H[i]);
for(int i=N-1; i>=0; i--){
while(!s.empty() && s.top().ft<H[i])s.pop();
if(!s.empty())v[i]=s.top().sd;
s.push({H[i], i});
}
stack<pair<ll, ll>>().swap(s);
for(int i=0; i<N; i++){
while(!s.empty() && s.top().ft<H[i])s.pop();
if(!s.empty())v1[i]=s.top().sd;
s.push({H[i], i});
}
}

int minimum_jumps(int A, int B, int C, int D) {
ll res=LLONG_MAX;
  for(int i=A; i<=B; i++){
    ll o=i;
    ll cnt=0;
    while(v2[o]<v2[C] && max(v[o], v1[o])>-1){
    if(v[o]==-1)o=v1[o];
    else if(v1[o]==-1)o=v[o];
    else {
    ll o1=v[o], o2=v1[o];
    if(max(v2[o1], v2[o2])==v2[o2])swap(o2, o1);
    if(v2[o1]<v2[C])o=o1;
    else o=o2;
    }
    cnt++;
    }
    if(o>=C && o<=D)res=min(res, cnt);
  }
  return res;
}/*
int main(){
init(7, {3, 2, 1, 6, 4, 5, 7});
cout<<minimum_jumps(4, 4, 6, 6)<<endl;
}
*/

• 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