제출 #771187

#제출 시각아이디문제언어결과실행 시간메모리
771187Trisanu_DasGrowing Vegetables is Fun 4 (JOI21_ho_t1)C++17
100 / 100
61 ms7120 KiB
#include<bits/stdc++.h> using namespace std; #define int long long #define N 200005 int a[N], p[N], s[N]; signed main(){ int n; cin >> n; for(int i = 1; i < n + 1; i++) cin >> a[i]; for(int i = 1; i < n + 2; i++) p[i] = p[i - 1] + max(0ll, a[i - 1] - a[i] + 1); for(int i = n; i > -1; i--) s[i] = s[i + 1] + max(0ll, a[i + 1] - a[i] + 1); int ans = LONG_MAX; for(int i = 1; i < n + 1;i++) ans = min(ans, max(p[i], s[i])); cout << ans << '\n'; }
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