제출 #941674

#제출 시각아이디문제언어결과실행 시간메모리
941674emptypringlescan3단 점프 (JOI19_jumps)C++17
0 / 100
18 ms3420 KiB
#include <bits/stdc++.h> using namespace std; #define int long long int32_t main(){ ios::sync_with_stdio(0);cin.tie(0); int n; cin >> n; long long arr[n]; for(int i=0; i<n; i++) cin >> arr[i]; int q; cin >> q; for(int i=0; i<q; i++){ int l,r; cin >> l >> r; assert(l==1&&r==n); } long long suf[n]; suf[n-1]=arr[n-1]; for(int i=n-2; i>=0; i--) suf[i]=max(suf[i+1],arr[i]); vector<pair<long long,int> > mono; long long ans=0; for(int i=0; i<n; i++){ while(!mono.empty()&&mono.back().second<=arr[i]){ int a=mono.back().second; if(i*2-a<n) ans=max(ans,arr[a]+arr[i]+suf[i*2-a]); mono.pop_back(); } if(!mono.empty()){ int a=mono.back().second; if(i*2-a<n) ans=max(ans,arr[a]+arr[i]+suf[i*2-a]); } mono.push_back({arr[i],i}); } cout << ans; }
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