Submission #936887

#	Time	Username	Problem	Language	Result	Execution time	Memory
936887		the_coding_pooh	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	66 ms	6996 KiB

Main

#include <bits/stdc++.h>
#define uwu return 0;

using namespace std;

const int SIZE = 2e5 + 5;

int N;

const long long INF = 1e18 + 5;

long long from_f[SIZE], from_e[SIZE], h[SIZE];

int main(){
    cin >> N;
    for (int i = 1; i <= N;i++){
        cin >> h[i];
    }

    for (int i = 1; i <= N;i++){
        from_f[i] = from_f[i - 1] + max(0LL, h[i - 1] - h[i] + 1);
        //cout << from_f[i] << '\n';
    }
    
    for (int i = N; i >= 1;i--){
        from_e[i] = from_e[i + 1] + max(0LL, h[i + 1] - h[i] + 1);
    }

    long long ans = INF;

    for (int i = 1; i <= N;i++){
        ans = min(ans, max(from_f[i], from_e[i]));
    }

    cout << ans << '\n';
}

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