제출 #386132

#제출 시각아이디문제언어결과실행 시간메모리
386132sahil_kGrowing Vegetables is Fun 4 (JOI21_ho_t1)C++14
100 / 100
33 ms4844 KiB
#include <iostream> using namespace std; int main () { ios_base::sync_with_stdio(false); cin.tie(0); int n; cin >> n; int a[n]; for (int i=0; i<n; i++) { cin >> a[i]; } long long pre[n]; pre[0] = 0; for (int i=1; i<n; i++) { pre[i] = pre[i-1]+max(0, a[i-1]-a[i]+1); } long long suf[n]; suf[n-1] = 0; for (int i=n-2; i>=0; i--) { suf[i] = suf[i+1]+max(0, a[i+1]-a[i]+1); } long long o = 1e16; for (int i=0; i<n; i++) { o = min(o, max(pre[i], suf[i])); } cout << o << endl; }
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