Submission #617270

#	Time	Username	Problem	Language	Result	Execution time	Memory
617270		Hanksburger	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	0 / 100	0 ms	212 KiB

Main

#include <bits/stdc++.h>
using namespace std;
int a[200005];
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, l, r, ans=0;
    cin >> n;
    for (int i=1; i<=n; i++)
        cin >> a[i];
    l=1;
    r=n;
    while (a[l]<a[l+1])
        l++;
    while (a[r-1]>a[r])
        r--;
    while (l<r)
    {
        int x=min(a[l]-a[l+1], a[r]-a[r-1])+1;
        ans+=x;
        a[l]-=x;
        a[r]-=x;
        while (a[l]<a[l+1])
            l++;
        while (a[r-1]>a[r])
            r--;
        if (r-l==1 && a[l]==a[r])
        {
            ans++;
            break;
        }
    }
    cout << ans;
    return 0;
}

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