Submission #686289

#	Time	Username	Problem	Language	Result	Execution time	Memory
686289		Pacybwoah	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	86 ms	5428 KiB

Main

#include<iostream>
#include<vector>
#include<algorithm>
#define ll long long
using namespace std;
int main(){
    int n;
    cin>>n;
    vector<ll> old(n+2);
    for(int i=0;i<n;i++) cin>>old[i+1];
    vector<ll> vec(n+1);
    for(int i=0;i<=n;i++) vec[i]=old[i+1]-old[i];
    ll pos=0,neg=0;
    for(int i=0;i<=n;i++){
        if(vec[i]>=0) pos+=vec[i]+1;
    }
    ll ans=1e18;
    for(int i=0;i<n;i++){
        if(vec[i]<=0){
            neg-=vec[i];
            neg++;
        }
        if(vec[i]>=0){
            pos-=vec[i];
            pos--;
        }
        ans=min(ans,max(pos,neg));
    }
    cout<<ans;
}

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