Submission #412974

#	Time	Username	Problem	Language	Result	Execution time	Memory
412974		wiritos16	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	35 ms	6952 KiB

Main

#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll arr[200000];
ll izq[200000];
ll der[200000];
int main()
{
	std::ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	ll n;
	cin>>n;
	for(ll i=0;i<n;i++)
	{
		cin>>arr[i];
	}
	izq[0]=0;
	for(ll i=1;i<n;i++)
	{
		izq[i]=izq[i-1]+max((long long)0,arr[i-1]-arr[i]+1);
	}
	der[n-1]=0;
	for(ll i=n-2;i>=0;i--)
	{
		der[i]=der[i+1]+max((long long)0,arr[i+1]-arr[i]+1);
	}
	ll cont=max(der[0],izq[0]);
	for(ll i=1;i<n;i++)
	{
		cont=min(cont,max(der[i],izq[i]));
	}
	cout<<cont;
	return 0;
}

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