Submission #931930

#	Time	Username	Problem	Language	Result	Execution time	Memory
931930		Aiperiii	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	0 / 100	0 ms	348 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+1),pr(n+1),sf(n+1);
    for(int i=1;i<=n;i++)cin>>a[i];
    a.pb(0);
    int mn=1e18;
    for(int j=1;j<=n;j++){
        pr[j]=pr[j-1]+max(0ll,a[j-1]-a[j]+1);
    }
    for(int j=n;j>=1;j--){
        sf[j]=sf[j+1]+max(0ll,a[j+1]-a[j]+1);
    }
    for(int i=1;i<=n;i++){
        mn=min(mn,max(pr[i],sf[i]));
    }
    cout<<mn<<"\n";
}
/*
5
3 2 2 3 1
5
9 7 5 3 1
 */

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