Submission #932000

#	Time	Username	Problem	Language	Result	Execution time	Memory
932000		Aiperiii	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	85 ms	7344 KiB

Main

#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define pb push_back
using namespace std;
signed main(){
    ios_base::sync_with_stdio();
    cin.tie(0);cout.tie(0);
    int n;
    cin>>n;
    vector <int> a(n);
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    vector <int> pr(n),sf(n);
    for(int i=1;i<n;i++){
        pr[i]=pr[i-1];
        if(a[i-1]>=a[i])pr[i]+=a[i-1]-a[i]+1;
    }
    for(int i=n-2;i>=0;i--){
        sf[i]=sf[i+1];
        if(a[i+1]>=a[i])sf[i]+=a[i+1]-a[i]+1;
    }
    int ans=1e18;
    for(int i=0;i<n;i++){
        ans=min(ans,max(sf[i],pr[i]));
    }
    cout<<ans;
}

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