Submission #590298

#	Time	Username	Problem	Language	Result	Execution time	Memory
590298		ioi	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	0 / 100	6 ms	340 KiB

Main

#include<bits/stdc++.h>

using namespace std;

#define debug(x) cout << '[' << #x << " is: " << x << "] " << endl;
#define inF freopen("cardgame.in" , "r" , stdin);
#define outF freopen("cardgame.out" , "w" , stdout);
#define imod(a , n) (a % n + n ) % n
#define sor(v) sort(v.begin() , v.end());
#define print(v) for(auto f : v ) cout << f << " " ;
#define rsor(v) sort(v.rbegin() , v.rend());
#define rev(v) reverse(v.begin() , v.end());
#define scan(v)for(auto &it : v)cin >> it ;
#define ll long long

#define logar(x , y) log(x) / log(y)
#define __sum(n) n * (n + 1) / 2
#define __lcm(a , b) a / __gcd(a , b) * b
#define pii pair<int , int >
#define fastio ios_base::sync_with_stdio(false);cin.tie(0);

#define int ll

const int N =  3e5 + 5 ,  M = N * 4  , MX = 2e4 + 40;
const ll MOD = 998244353  , oo = 1e9 + 9 , OO = 1e18 , mod = MOD ;
const double pi = acos(-1) , eps = 1e-17 ;

int di[] = {1 , -1 , 0 , 0};
int dj[] = {0 , 0 , 1 , -1};

struct data{
int a , b  , c ;

};

int32_t main()
{
    // inF;
   // inF;outF;
    fastio;

    //Welcome back without <TAWJIHI>


    int n;
    cin >> n ;

    vector<int> v(n);
    for(auto &it : v)cin >> it ;


    int mn = 1e9 ;

    // asc or desc


    int asc = 0 , past = v[0] - 1 , cnt = 0;

    for(int i = 0 ; i < n ; i ++){
        int curr = v[i] + cnt ;

        if(past >= curr)cnt += past - curr + 1 , asc += past - curr  + 1 , curr += past - curr  + 1 ;
        past = curr ;

    }
    mn = min(mn , asc);
    past = v.back() - 1 ;
    int desc = 0 ;
    cnt = 0 ;

    for(int i = n - 1 ; i >= 0 ; i --){

        int curr = v[i] + cnt ;

        if(past >= curr)cnt += past - curr  + 1 , desc += past - curr  +1 , curr += past - curr  + 1 ;


        past = curr ;

    }

    mn = min(mn , desc);

    for(int i = 1 ; i < n - 1 ; i ++){

        int j = 1 , c2 = 0 , c1 = 0 , past , past2;
        past = v[0];
        int ans = 0 ;

        while(j < i){

            int curr = v[j] + c1 ;



            if(curr <= past)
                c1 += past - curr + 1 , ans += past - curr + 1 ;

            past = v[j] + c1;
            j ++ ;
        }

        past2 = v.back();
        j = n - 2 ;

        while(j >= i){

            int curr = v[j] + c2 ;

            if(curr <= past2)c2+= past2 - curr + 1 , ans += past2 - curr + 1 ;

            past2 = v[j] + c2 ;
            j -- ;
        }
        if(past >= past2)ans += past - past2 + 1 , c2 += past - past2 + 1 ;

        ans -= min(c1 , c2);
        mn = min(mn , ans);
    }






    cout << mn ;

}

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