Submission #1010477

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010477		vjudge1	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	23 ms	7008 KiB

Main

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
ll r[212345],l[212345];
int main() {
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    ll n,c=1e18;
    cin>>n;
    ll a[n];
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    for(int i=n-2;i>=0;i--){
        r[i]=r[i+1];
        if(a[i]<=a[i+1])r[i]=r[i+1]+max(0ll,a[i+1]-a[i]+1);
    }
    for(int i=1;i<n;i++){
        l[i]=l[i-1];
        if(a[i]<=a[i-1])l[i]+=max(0ll,a[i-1]-a[i]+1);
    }
    for(int i=0;i<n;i++){
        c=min(c,max(r[i],l[i]));
    }
    cout<<c;
}

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