Submission #415296

#	Time	Username	Problem	Language	Result	Execution time	Memory
415296		NintsiChkhaidze	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	35 ms	7000 KiB

Main

#include <bits/stdc++.h>
#define pb push_back
#define ll  long long
#define s second
#define f first
#define int ll
using namespace std;
const int N = 200005;
ll a[N],pref[N],suff[N];
vector <int> v;
main (){
    ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);
    int n;
    cin>>n;
    
    for (int i=1;i<=n;i++)
       cin>>a[i];
    
    ll ans=1e18;
    for (int i=1;i<=n;i++)
        pref[i] = pref[i - 1] + max((ll)0,a[i - 1] - a[i] + 1);
    
    for (int i = n; i >= 1; i--)
        suff[i] = suff[i + 1] + max((ll)0,a[i + 1] - a[i] + 1);
        
    for (int i=1;i<=n;i++)
        ans = min(ans,max(pref[i],suff[i]));
    cout<<ans;
}

Compilation message (stderr)

Main.cpp:11:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main (){
      | ^~~~

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