Submission #601511

#	Time	Username	Problem	Language	Result	Execution time	Memory
601511		pakhomovee	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	33 ms	6904 KiB

Main

#include <iostream>
#include <vector>
#include <algorithm>
#include <random>
#include <iomanip>
#include <cassert>
#include <deque>
#include <functional>
#include <set>
#include <queue>
#include <map>

using namespace std;

#define int long long

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin >> n;
    vector<int> a(n);
    for (int& i : a) cin >> i;
    int ans = 1e18;
    vector<int> pref(n, 0);
    vector<int> suff(n, 0);
    for (int i = 1; i < n; ++i) {
        pref[i] = pref[i - 1] + max(0ll, a[i - 1] - a[i] + 1);
    }
    for (int i = n - 2; i >= 0; --i) {
        suff[i] = suff[i + 1] + max(0ll, a[i + 1] - a[i] + 1);
    }
    for (int i = 0; i < n; ++i) {
        ans = min(ans, max(pref[i], suff[i]));
    }
    cout << ans;
}

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