제출 #725485

#제출 시각아이디문제언어결과실행 시간메모리
725485khanhdz06Growing Vegetables is Fun 4 (JOI21_ho_t1)C++17
100 / 100
33 ms6952 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; int n; ll a[200002]; ll b[200002]; ll c[200002]; int main(){ ios_base::sync_with_stdio(false), cin.tie(nullptr); cin >> n; for(int i=1; i<=n; i++) cin >> a[i]; for(int i=1; i<=n; i++){ b[i] = b[i-1] + max(a[i-1]-a[i]+1, 0ll); } for(int i=n; i; i--){ c[i] = c[i+1] + max(a[i+1]-a[i]+1, 0ll); } ll ret = 1e18; for(int i=1; i<=n; i++){ ret = min(ret, max(b[i], c[i])); } cout << ret; }
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