Submission #486322

#	Time	Username	Problem	Language	Result	Execution time	Memory
486322		PoPularPlusPlus	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	25 ms	5372 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned long long 
#define pb(e) push_back(e)
#define sv(a) sort(a.begin(),a.end())
#define sa(a,n) sort(a,a+n)
#define mp(a,b) make_pair(a,b)
#define vf first
#define vs second
#define ar array
#define all(x) x.begin(),x.end()
const int inf = 0x3f3f3f3f;
const int mod = 1000000007; 
const double PI=3.14159265358979323846264338327950288419716939937510582097494459230;
bool remender(ll a , ll b){return a%b;}

void solve(){
	int n;
	cin >> n;
	ll arr[n];
	for(int i = 0; i < n; i++)cin >> arr[i];
	ll p[n];
	p[n-1] = 0;
	for(int i = n-2; i >= 0; i--){
		p[i] = p[i + 1];
		if(arr[i] <= arr[i + 1])p[i] += (arr[i + 1] - arr[i]) + 1;
	}
	ll ans = p[0];
	ll cur = 0;
	for(int i = 1; i < n; i++){
		if(arr[i] <= arr[i-1])cur += (arr[i-1] - arr[i]) + 1;
		ans = min(ans , max(cur , p[i]));
	}
	ans = min(ans,cur);
	cout << ans << '\n';
}

int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
	//int t;cin >> t;while(t--)
	solve();
	return 0;
}

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