Submission #533861

#	Time	Username	Problem	Language	Result	Execution time	Memory
533861		someone	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	24 ms	6940 KiB

Main

#include <bits/stdc++.h>
#define int long long
using namespace std;
 
const int N = 2e5 + 42, INF = 1e18;

int n, a[N], val[N][2];

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    
    cin >> n;
    for(int i = 0; i < n; i++)
        cin >> a[i];
    for(int i = 1; i < n; i++)
        val[i][0] = val[i-1][0] + max(a[i-1] + 1 - a[i], 0ll);
    for(int i = n-2; i > -1; i--)
        val[i][1] = val[i+1][1] + max(a[i+1] + 1 - a[i], 0ll);
    int ans = INF;
    for(int i = 0; i < n; i++)
        ans = min(ans, max(val[i][0], val[i][1]));
    cout << ans;
}

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