Submission #1179630

#	Time	Username	Problem	Language	Result	Execution time	Memory
1179630		user736482	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	15 ms	4964 KiB

Main

#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pb push_back
#define ff first
#define ss second
#define MOD 1000000009
#define INF 1000000019
#define INFL 1000000000000000099LL

ll n,q,s,t,a,b,c,ans=INFL,k,m;
ll co[1000007];
ll dp[1000007],dp2[1000007];//koszt,
int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>n;
    for(ll i=0;i<n;i++){
        cin>>a;
        co[i]=a;
    }
    for(ll i=1;i<n;i++){
        dp[i]=dp[i-1]+max(0LL,co[i-1]-co[i]+1);
    }
    for(ll i=n-2;i>=0;i--)
        dp2[i]=dp2[i+1]+max(0LL,co[i+1]-co[i]+1);
    for(ll i=0;i<n;i++)ans=min(ans,max(dp[i],dp2[i]));
    cout<<ans;
}

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