Submission #984858

#	Time	Username	Problem	Language	Result	Execution time	Memory
984858		vjudge1	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	25 ms	7116 KiB

Main

#include <bits/stdc++.h>
#define ft first
#define sd second
#define pb push_back
#define nl "\n"
#define int ll
typedef long long ll;
typedef long double ld;
using namespace std;
const int N = 1000100;

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int T = 1;
    while(T--) {
        int n;
        cin >> n;
        int a[n];
        for (int i = 0; i < n; i++) {
            cin >> a[i];
        }
        int dp[n], dp1[n];
        dp[0] = 0;
        dp1[n - 1] = 0;
        for (int i = 1; i < n; i++) {
            dp[i] = dp[i - 1];
            if (a[i - 1] >= a[i]) {
                dp[i] += (a[i - 1] - a[i] + 1);
            }
        }
        for (int i = n - 2; i >= 0; i--) {
            dp1[i] = dp1[i + 1];
            if (a[i + 1] >= a[i]) {
                dp1[i] += (a[i + 1] - a[i] + 1);
            }
        }
        int mn = 1e18;
        for (int i = 0; i < n; i++) {
            mn = min( mn, max(dp[i], dp1[i]));
        }
        cout << mn;
    }
}

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