Submission #1016150

#	Time	Username	Problem	Language	Result	Execution time	Memory
1016150		rsinventor	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	26 ms	7012 KiB

Main

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef vector <ll> vll;
typedef vector<bool> vb;
typedef vector <string> vs;
typedef vector<char> vc;
typedef pair<int, int> pii;
typedef vector <pii> vpii;

#define all(a) (a).begin(), (a).end()
#define pb push_back
#define endl "\n"
#define int ll

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n;
    cin >> n;
    vector<int> a(n);
    for(int i = 0; i < n; i++) {
        cin >> a[i];
    }
    vector<int> up(n);
    vector<int> down(n);
    for(int i = 1; i < n; i++) {
        up[i] = up[i-1] + max(0ll, (a[i-1] - a[i] + 1));
    }
    for(int i = n-2; i >= 0; i--) {
        down[i] = down[i+1] + max(0ll, (a[i+1] - a[i] + 1));
    }
    int res = max(up[0], down[0]);
    for(int i = 0; i < n; i++) {
        res = min(res, max(up[i], down[i]));
    }
    cout << res << endl;

    return 0;
}

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