Submission #378178

#	Time	Username	Problem	Language	Result	Execution time	Memory
378178		Atill83	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	0 / 100	1 ms	364 KiB

Main

#include <bits/stdc++.h>
#define ff first
#define ss second
#define endl '\n'
using namespace std;
const long long INF = (long long) 1e18;
const int mod = (int) 1e9+7;
const int MAXN = (int) 3e5+5;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
ll n;
ll a[MAXN];
ll pre[MAXN], suf[MAXN];


int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);

    #ifdef Local
        freopen("C:/Users/Admin/Desktop/Yazilim/C/IO/int.txt","r",stdin);
        freopen("C:/Users/Admin/Desktop/Yazilim/C/IO/out.txt","w",stdout);
    #endif

    cin>>n;

    for(int i = 1; i <= n; i++){
        cin>>a[i];
    }

    for(int i = 1; i <= n; i++){
        pre[i] = pre[i - 1] + max(0LL, a[i - 1] - a[i] + 1); 
    }
    ll ans = INF;
    for(int i = n; i >= 0; i--){
        suf[i] = suf[i + 1] + max(0LL, a[i + 1] - a[i] + 1);
        ans = min(ans, suf[i + 1] + pre[i - 1] + max(max(a[i - 1] - suf[i + 1], a[i + 1] - pre[i - 1]) - a[i] + 1, 0LL));
    }
    cout<<ans<<endl;

    #ifdef Local
        cout<<endl<<fixed<<setprecision(2)<<1000.0 * clock() / CLOCKS_PER_SEC<< " milliseconds ";
    #endif
}

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