Submission #677010

#	Time	Username	Problem	Language	Result	Execution time	Memory
677010		rittin1	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	28 ms	6952 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin >> n;
    int arr[n+1];
    for(int i=1;i<=n;i++){
        cin >> arr[i];
    }
    int dp1[n+1];
    int dp2[n+1];
    dp1[1]=0;
    for(int i=2;i<=n;i++){
        dp1[i]=dp1[i-1];
        if(arr[i]<=arr[i-1]){
            dp1[i]+=arr[i-1]-arr[i]+1;
        }
    }
    dp2[n]=0;
    for(int i=n-1;i>=1;i--){
        dp2[i]=dp2[i+1];
        if(arr[i]<=arr[i+1]){
            dp2[i]+=arr[i+1]-arr[i]+1;
        }
    }
    int ans=max(dp1[1],dp2[1]);
    for(int i=2;i<=n;i++){
        ans=min(ans,max(dp1[i],dp2[i]));
    }
    cout << ans;
}

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