제출 #983582

#제출 시각아이디문제언어결과실행 시간메모리
983582Nexus밀림 점프 (APIO21_jumps)C++17
0 / 100
4083 ms35416 KiB
#include <bits/stdc++.h> #define ll long long using namespace std; const ll N=1e6+9,M=2e18+9,mod=1e9+7; bool vis[N]; pair<ll,ll>p; vector<ll>v[N]; ll a[N],n,x,y,z; queue<pair<ll,ll>>q; void dfs(ll nd,ll dep,ll A,ll B,ll C,ll D) { if(A<=nd && nd<=B)dep=0; if(C<=nd && nd<=D) { if(x==-1)x=dep; x=min(x,dep); return; } ++dep; for(auto i:v[nd])dfs(i,dep,A,B,C,D); } void init(int m,vector<int>h) { n=m; for(ll i=0;i<n;++i)a[i]=h[i]; for(ll i=0;i<n;++i) { for(ll j=i-1;j>=0;--j) { if(a[j]>a[i]) { v[i].push_back(j); break; } } for(ll j=i+1;j<n;++j) { if(a[j]>a[i]) { v[i].push_back(j); break; } } } } int minimum_jumps(int A, int B, int C, int D) { x=-1; for(ll i=A;i<=B;++i) { if(!vis[i])dfs(i,0,A,B,C,D); } return x; }
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