제출 #448724

#제출 시각아이디문제언어결과실행 시간메모리
448724SirCovidThe19thHacker (BOI15_hac)C++14
100 / 100
456 ms18472 KiB
#include <bits/stdc++.h> using namespace std; int main(){ int n; cin >> n; int k = ceil(n/2.0), A[2*n+1] = {}, ans = 0; multiset<int> s; for (int i = 1; i <= n; i++) cin >> A[i], A[i+n] = A[i]; for (int i = 1; i <= 2*n; i++) A[i] += A[i-1]; for (int i = 1; i+k-1 <= 2*n; i++){ s.insert(A[i+k-1]-A[i-1]); if (i >= k){ ans = max(ans, *s.begin()); s.erase(s.find(A[i]-A[i-k])); } }cout<<ans<<endl; }
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