Submission #1079621

#	Time	Username	Problem	Language	Result	Execution time	Memory
1079621		Dennis_Jason	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	0 / 100	0 ms	452 KiB

Main

#include <bitset>
#include <cmath>
#include <functional>
#include <algorithm>
#include <numeric>
#include <system_error>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <unordered_map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>
#include <cstring>
#include <climits>
#define pb push_back
#define MOD 1000000007
#define NMAX 200001
#define nl '\n'
#define pii1 pair<int, pair<int,int>>  (1,(1,2));
#define pii pair<int,int>
#define tpl tuple<int,int,int>
#define int long long
using namespace std;
ifstream fin("data.in");
ofstream fout("data.out");
const int INF=1e12;
/*
    ====================DEMONSTRATION======================

       5

        3 2 2 3 1
  pref: 0 2 3 3 6
  suf:  3 3 2 0 0


    =========================END===========================

 */

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin>>n;
    vector<int>v(n+1);
    for(int i=1;i<=n;++i)
        cin>>v[i];

    vector<int>pref(n+1),suf(n+1);
    pref[1]=0;
    suf[n]=v[1];
    for(int i=2;i<=n;++i)
    {
        pref[i]=pref[i-1];
        if(v[i]<=v[i-1])
            pref[i]+=(v[i-1]-v[i]+1);
    }
    
    for(int i=n-1;i>=1;--i)
    {
        suf[i]=suf[i+1];
        if(v[i]<=v[i+1])
            suf[i]+=(v[i+1]-v[i]+1);
    }
    
    int ans=INF;
    for(int i=1;i<=n;++i)
    {
        ans=min(ans,max(pref[i],suf[i]));
    }
    cout<<ans;

    return 0;
}

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