Submission #983730

#	Time	Username	Problem	Language	Result	Execution time	Memory
983730		Nexus	Rainforest Jumps (APIO21_jumps)	C++17	21 / 100	4070 ms	14600 KiB

jumps

#include <bits/stdc++.h>
#define ll long long
 
using namespace std;
 
const ll N=2e5+9,M=2e18+9,mod=1e9+7;

bool vis[N];
pair<ll,ll>p;
vector<ll>v[N];
ll x,y,z;
queue<pair<ll,ll>>q;
 
void init(int n,vector<int>h)
{
    for(ll i=0;i<n;++i)
    {
        for(ll j=i-1;j>=0;--j)
        {
            if(h[j]>h[i])
            {
                v[j].push_back(i);
                break;
            }
        }
        for(ll j=i+1;j<n;++j)
        {
            if(h[j]>h[i])
            {
                v[j].push_back(i);
                break;
            }
        }
    }
}
 
int minimum_jumps(int A, int B, int C, int D)
{
    x=-1;
    memset(vis,false,sizeof vis);
    for(ll i=C;i<=D;++i)
    for(auto j:v[i])q.push({j,1});
    while(q.size())
    {
       p=q.front();
       q.pop();
       if(vis[p.first])continue;
       vis[p.first]=1;
       if(A<=p.first && p.first<=B)
       x=(x==-1?p.second:min(x,p.second));
       ++p.second;
       for(auto j:v[p.first])q.push({j,p.second});
    }
    return x;
}

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