Submission #420818

#	Time	Username	Problem	Language	Result	Execution time	Memory
420818		Harry464	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	110 ms	5316 KiB

Main

#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <utility>

using namespace std;
typedef long long ll;


int main()
{
    ll n;
    cin >> n;

    vector <ll> a(n);
    for (int i = 0; i < n; i++)
        cin >> a[i];

    ll uk = 0;
    vector <ll> potl(n);
    for (int i = 0; i < n - 1; i++){

      potl[i] = uk;

      ll tren = a[i] + 1 - a[i+1];

      if (tren > 0)
            uk += tren;

    }
    potl[n-1] = uk;
    uk = 0;

    ll rjes = potl[n-1];


    for (int i = n - 1; i >= 1; i--){

        ll tren = a[i] + 1 - a[i-1];

        if (tren > 0)
          uk += tren;

        rjes = min(rjes, max(uk, potl[i-1]));

    }

    cout << rjes;


}

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