Submission #771187

#	Time	Username	Problem	Language	Result	Execution time	Memory
771187		Trisanu_Das	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	61 ms	7120 KiB

Main

#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';
}

• Subtask 1: 40 / 40
• Subtask 2: 60 / 60