제출 #769955

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
769955		raysh07	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	22 ms	5408 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF (int)1e18
#define f first
#define s second

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

void Solve() 
{
    int n; cin >> n;
    vector <int> a(n), d(n);
    
    int a1 = 0, a2 = 0;
    for (int i = 0; i < n; i++){
        cin >> a[i];
        if (i != 0) {
            d[i] = a[i] - a[i - 1];
            d[i] = -d[i];
            if (d[i] <= 0) a1 += 1 - d[i];
        }
    }
    int ans = a1;
    for (int i = 1; i < n; i++){
        int x = d[i];
        if (x <= 0) a1 -= 1 - x;
        if (x >= 0) a2 += 1 + x;
        
      //  cout << a1 << " " << a2 << "\n";
        
        ans = min(ans, max(a1, a2));
    }
    
    cout << ans << "\n";
}

int32_t main() 
{
    auto begin = std::chrono::high_resolution_clock::now();
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t = 1;
  //  cin >> t;
    for(int i = 1; i <= t; i++) 
    {
        //cout << "Case #" << i << ": ";
        Solve();
    }
    auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
    return 0;
}

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