Submission #460706

#	Time	Username	Problem	Language	Result	Execution time	Memory
460706		Baray	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	128 ms	6980 KiB

Main

#include <iostream>
#include <vector>
#include <set>
#include <queue>
#include <stack>
#include <algorithm>
#include <climits>

using namespace std;

long long n, ans = INT_MAX;

int main() {
    cin >> n;

    vector<long long> arr(n), pre(n), suf(n);
    suf[n - 1] = 0;
    pre[0] = 0;

    for (long long i = 0; i < n; i++) {
        cin >> arr[i];
    }

    for (long long i = 1; i < n; i++) {
        pre[i] = pre[i - 1] + max(0ll, arr[i - 1] + 1 - arr[i]);
    }

    for (long long i = n - 2; i >= 0; i--) {
        suf[i] = suf[i + 1] + max(0ll, arr[i + 1] + 1 - arr[i]);
    }
  
  	ans = min(suf[0], pre[n - 1]);
  
    for (long long i = 1; i < n; i++) {
        ans = min(ans, max(suf[i], pre[i]));
    }

    cout << ans << "\n";
}

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