Submission #1010521

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010521		vjudge1	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	59 ms	6624 KiB

Main

#include "bits/stdc++.h"
typedef long long ll;
using namespace std;
//#define int long long
ll f1(ll d){
    if(d > 0) return 0;
    else return 1-d;
}
ll f2(ll d){
    if(d < 0) return 0;
    else return d+1;
}
signed main(){
    ll n;
    cin >> n;
    ll a[n];
    ll maxx = 0;
    ll d[n];
    for(int i = 0; i < n; i++){
        cin >> a[i];
    }
    for(int i = 0; i < n-1; i++){
        d[i] = a[i+1] - a[i];
//        cout << d[i] << " ";
    }
//    cout << endl;
    ll p[n+1], s[n+1];
    p[0] = 0; s[0] = 0;
    for(int i = 1; i < n; i++){
        p[i] = p[i-1]+f1(d[i-1]);
        s[i] = s[i-1]+f2(d[n-i-1]);
//        cout << p[i-1] << " " << s[i-1] << endl;;
    }
//    cout << p[n-1] << " " << s[n-1] << endl << "/";
    ll ans = LLONG_MAX;
    for(int i = 0; i < n; i++){
        ans = min(ans, maxx = max(p[i], s[n-i-1]));
//        cout << p[i] << " " << s[n-i-1] << " " << ans << endl;
    }
    cout << ans;
}

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