Submission #1320009

#	Time	Username	Problem	Language	Result	Execution time	Memory
1320009		asim	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	0 / 100	0 ms	332 KiB

Main

// created : 2026/02/04 19:05:51
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pb push_back
#define all(v) v.begin(), v.end()

void solve() {
    int n;
    cin >> n;
    int arr[n + 1], pref[n + 1], suff[n + 2];
    for(int i = 1; i <= n; i++) {
        
        cin >> arr[i];
    }
    pref[1] = 0, pref[0] = 0;
    for(int i = 2; i <= n; i++) {
        pref[i] = pref[i - 1];
        if(arr[i] < arr[i - 1]) {
            pref[i] += (arr[i - 1] - arr[i] + 1);
        }
    }
    suff[n] = 0, suff[n + 1] = 0;
    for(int i = n - 1; i >= 1; i--) {
        suff[i] = suff[i + 1];
        if(arr[i] < arr[i + 1]) {
            suff[i] += (arr[i + 1] - arr[i] + 1);
        }
    }
    int ans = LLONG_MAX;
    for(int i = 2; i <= n - 1; i++) {
        ans = min(ans, max(pref[i], suff[i]));
    }
    cout << ans << '\n';
}
signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int t = 1;
    //cin >> t;
    while (t--) {
        solve();
    }
}

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