Submission #942159

#	Time	Username	Problem	Language	Result	Execution time	Memory
942159		dsyz	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	40 / 100	1006 ms	5464 KiB

Main

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define MAXN (1000005)
int main() {
	ios_base::sync_with_stdio(false);cin.tie(0);
	ll N;
	cin>>N;
	ll arr[N], A[N];
	for(ll i = 0;i < N;i++){
		cin>>arr[i];
		A[i] = arr[i];
	}
	ll ans = 1e18;
	for(ll split = 0;split < N;split++){
		ll total = 0;
		ll Ldiff = 0,Rdiff = 0;
		for(ll i = 1;i <= split;i++){
			total += max(0ll,(arr[i - 1] + 1) - arr[i]);
			Ldiff += max(0ll,(arr[i - 1] + 1) - arr[i]);
		}
		for(ll i = N - 2;i >= split;i--){
			total += max(0ll,(arr[i + 1] + 1) - arr[i]);
			Rdiff += max(0ll,(arr[i + 1] + 1) - arr[i]);
		}
		total -= min(Ldiff,Rdiff);
		ans = min(ans,total);
	}
	cout<<ans<<'\n';
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:9:13: warning: variable 'A' set but not used [-Wunused-but-set-variable]
    9 |  ll arr[N], A[N];
      |             ^

• Subtask 1: 40 / 40
• Subtask 2: 0 / 60