Submission #1163003

#	Time	Username	Problem	Language	Result	Execution time	Memory
1163003		hydrogen	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	17 ms	5080 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) (x).begin(), (x).end()
#define f first
#define s second  
#define yes cout<<"YES\n"
#define no cout<<"NO\n"
#define imp cout<<-1<<"\n"
#define pb push_back
#define pii pair<int,int>
#define piii pair<int,pair<int,int>>
#define fast ios::sync_with_stdio(false);cin.tie(0); cout.tie(0)
const int INF = 1e18;
const int mod=998244353;
void solve(){
    int n,k,m,a,b,c;
    cin>>n;
    vector<int>v(n);
    for(int i=0;i<n;i++){
        cin>>v[i];
    }
    vector<int>p(n);
    vector<int>s(n);
    int mx=0;
    p[0]=0;
    // cout<<0 <<" ";
    for(int i=1;i<n;i++){
        p[i]+=p[i-1]+max(v[i-1]-v[i]+1,0LL);
        // cout<<p[i]<<" ";
    }
    s[n-1]=0;
    // cout<<'\n';
    for(int i=n-2;i>=0;i--){
        s[i]+=s[i+1]+max(v[i+1]-v[i]+1,0LL);
        
    }
    int ans=1e18;
    for(int i=0;i<n;i++){
        ans=min(ans,p[i]+max(s[i]-p[i],0LL));
    }
    cout<<ans<<"\n";
}
signed main() {
    fast;
    int t=1;
    // cin>>t;
    solve();
}

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