Submission #756794

#	Time	Username	Problem	Language	Result	Execution time	Memory
756794		gvancak	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++11	40 / 100	38 ms	3548 KiB

Main

#include <bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define pb push_back
using namespace std;
ll mn,mx,x,n,m,k,a[100005],b[100005],l,d,ans,pref[100005],suf[1000005],y;
bool ok,okk;
pair <ll,ll> dp[100005];
int main(){
	cin>>n;
	for (int i=1; i<=n; i++){
	    cin>>a[i];
	    b[i]=a[i];
	}
	pref[0]=0;
	for (int i=2; i<=n; i++){
	    if (a[i-1]<a[i]) {
	        pref[i]=pref[i-1]; continue;
	    }
	    pref[i]=pref[i-1]+a[i-1]+1-a[i];
	}
	suf[n]=0;
	for (int i=n-1; i>=1; i--){
	    if (a[i+1]<a[i]) {
	        suf[i]=suf[i+1]; continue;
	    }
	    suf[i]=suf[i+1]+a[i+1]+1-a[i]; 
	}
	ans=1e18;
	for (int i=1; i<=n; i++){
	    ans=min(ans,max(pref[i],suf[i]));
	}
	cout<<ans<<endl;
}

• Subtask 1: 40 / 40
• Subtask 2: 0 / 60