Submission #689714

#	Time	Username	Problem	Language	Result	Execution time	Memory
689714		prairie2022	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	90 ms	5372 KiB

Main

#include <bits/stdc++.h>
#define int long long
#define fastio cin.tie(0), cout.tie(0), ios::sync_with_stdio(0);
#define sp <<' '<<
using namespace std;


signed main(){
    int n, tmp, ans;
    cin >> n;
    vector<int> d(n);
    vector<int> a(n, 0);
    cin >> tmp;
    for(int i=1; i<n; i++){
        cin >> d[i];
        swap(d[i], tmp);
        d[i] = tmp-d[i];
    }
    for(int i=1; i<n; i++){
        if(d[i]>0)
            a[i] = a[i-1];
        else
            a[i] = a[i-1]+1-d[i];
    }
    ans = a[n-1];
    tmp = 0;
    for(int i=n-1; i>0; i--){
        if(d[i]>=0)
            tmp += 1+d[i];
        ans = min(ans, max(a[i-1], tmp));
    }
    cout << ans << '\n';
    return 0;
}

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