Submission #1320474

#	Time	Username	Problem	Language	Result	Execution time	Memory
1320474		suleyman_1951	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	17 ms	5068 KiB

Main

// TEMPLATE
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
#define ordered_set_char tree<char, null_type, less<char>, rb_tree_tag, tree_order_statistics_node_update>
#define ordered_set_string tree<string, null_type, less<string>, rb_tree_tag, tree_order_statistics_node_update>
#define ordered_multiset tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update>
#define ordered_multiset_char tree<char, null_type, less_equal<char>, rb_tree_tag, tree_order_statistics_node_update>
#define ordered_multiset_string tree<string, null_type, less_equal<string>, rb_tree_tag, tree_order_statistics_node_update>
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define int long long
#define ldouble long double
#define ll unsigned long long
// #define int int_fast32_t
#define endl '\n'
#define pii pair<int, int>
#define F first
#define S second
void solve()
{
    int n;
    cin >> n;
    vector<int> vt(n);
    for (int i = 0; i < n; i++)
    {
        cin >> vt[i];
    }
    vector<int> pref(n);
    pref[0] = 0;
    for (int i = 1; i < n; i++)
    {
        if (vt[i] <= vt[i - 1])
        {
            pref[i] = pref[i - 1] + vt[i - 1] + 1 - vt[i];
        }
        else
        {
            pref[i] = pref[i - 1];
        }
    }
    vector<int> suf(n);
    suf[n - 1] = 0;
    for (int i = n - 2; i >= 0; i--)
    {
        if (vt[i] <= vt[i + 1])
        {
            suf[i] = suf[i + 1] + vt[i + 1] + 1 - vt[i];
        }
        else
        {
            suf[i] = suf[i + 1];
        }
    }
    int ans = LLONG_MAX;
    for (int i = 0; i < n; i++)
    {
        ans = min(ans, max(pref[i], suf[i]));
    }
    cout << ans << endl;
}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int T = 1;
    // cin >> T;
    while (T--)
        solve();
}

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