제출 #791222

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
791222		n3rm1n	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	20 ms	6980 KiB

Main

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
const long long MAXN = 2e5 + 10;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
long long n;
long long a[MAXN];

void read()
{
    cin >> n;
    for (long long i = 1; i <= n; ++ i)
        cin >> a[i];
}
long long dp0[MAXN], dp1[MAXN];
void solve()
{
    for (long long i = 2; i <= n; ++ i)
    {
        dp0[i] = dp0[i-1];

        if(a[i] <= a[i-1])
        {
            dp0[i] += a[i-1] + 1 - a[i];

        }
    }
    for (long long i = n-1; i >= 1; -- i)
    {
        dp1[i] = dp1[i+1];

        if(a[i] <= a[i+1])
        {
            dp1[i] += a[i+1] + 1 - a[i];

        }
    }
    long long ans = 1e17+10;
    for (long long i = 1; i <= n; ++ i)
    {
        ans = min(max(dp0[i], dp1[i]), ans);
    }
    cout << ans << endl;
}
int main()
{
    speed();

    read();
    solve();
    return 0;
}

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