제출 #1174361

#제출 시각아이디문제언어결과실행 시간메모리
1174361Hamed_GhaffariGrowing Vegetables is Fun 4 (JOI21_ho_t1)C++20
100 / 100
23 ms2632 KiB
#include<bits/stdc++.h> using namespace std; const int MXN = 2e5+5; int n, a[MXN]; long long dp[MXN]; int32_t main() { cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0); cin >> n; for(int i=1; i<=n; i++) { cin >> a[i]; dp[i] = dp[i-1] + (a[i-1]>=a[i] ? a[i-1]-a[i]+1 : 0); } long long ans = 1e18, val=0; for(int i=n; i>=1; i--) { val += (a[i+1]>=a[i] ? a[i+1]-a[i]+1 : 0); ans = min(ans, max(dp[i], val)); } cout << ans << '\n'; return 0; }
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