Submission #828895

#	Time	Username	Problem	Language	Result	Execution time	Memory
828895		raphaelp	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	70 ms	3020 KiB

Main

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int N;
    cin >> N;
    vector<int> A(N);
    for (int i = 0; i < N; i++)
    {
        cin >> A[i];
    }
    long long tot = 0;
    int a = 1, b = N - 2, adda = 0, addb = 0;
    while (a <= b)
    {
        while (A[a - 1] - adda < A[a])
        {
            a++;
            adda = 0;
        }
        while (A[b + 1] - addb < A[b])
        {
            b--;
            addb = 0;
        }
        if (a > b)
            break;
        int m = min(A[a - 1] - A[a] + 1 - adda, A[b + 1] - A[b] + 1 - addb);
        adda += m;
        addb += m;
        tot += m;
    }
    if (A[a] == A[b] && a == b + 1)
        tot++;
    cout << tot;
}

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