Submission #807053

#	Time	Username	Problem	Language	Result	Execution time	Memory
807053		caganyanmaz	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	0 / 100	1 ms	340 KiB

Main

#include <bits/stdc++.h>
#define int int64_t
using namespace std;
constexpr static int MXSIZE = 2e5;

int n, v[MXSIZE], dp[MXSIZE+1][2]; // Increasing, decreasing

int32_t main()
{
        cin >> n;
        for (int i = 0; i < n; i++)
                cin >> v[i];
        for (int i = 2; i <= n; i++)
                dp[i][0] = dp[i-1][0] + max<int>(0, 1 + v[i-2] - v[i-1]);
        for (int i = n-2; i >= 0; i--)
                dp[i][1] = dp[i+1][1] + max<int>(0, 1 + v[i+1] - v[i]);
        //int mn = min(dp[n][0], dp[0][1]);
        int mn = INT_MAX;
        for (int i = 0; i < n; i++)
        {
                int l = i > 0 ? (v[i-1] + dp[i][0]) : 0;
                int r = i < (n-1) ? v[i+1] + dp[i+1][1] : 0;
                int c = v[i] + dp[i][0] + dp[i+1][1];
                mn = min(mn, max(dp[i][0], dp[i+1][1]) + max({c-1, r, l}) - c + 1);
        }
        cout << mn << "\n";
}

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