Submission #1056131

#	Time	Username	Problem	Language	Result	Execution time	Memory
1056131		SalihSahin	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	24 ms	7128 KiB

Main

#include<bits/stdc++.h>
#define int long long
#define pb push_back
#define double long double
using namespace std;

const int mod = 1e9 + 7;
const int N = 2e5 + 5;

int32_t main(){
    ios_base::sync_with_stdio(false), cin.tie(0), cout.tie(0);
    int n;
    cin>>n;
    vector<int> a(n);
    for(int i = 0; i < n; i++){
        cin>>a[i];
    }
    vector<int> dp1(n+1), dp2(n+1);
    dp1[1] = 0;
    for(int i = 1; i < n; i++){
        dp1[i+1] = dp1[i] + max(0LL, a[i-1] + 1 - a[i]);
    }
    dp2[n] = 0;

    for(int i = n-2; i >= 0; i--){
        dp2[i+1] = dp2[i+2] + max(0LL, a[i+1] + 1 - a[i]);
    }

    int ans = mod * mod;
    for(int i = 1; i <= n; i++){
        ans = min(ans, max(dp1[i], dp2[i]));
    }

    cout<<ans<<endl;
    return 0;
}

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