Submission #923387

#	Time	Username	Problem	Language	Result	Execution time	Memory
923387		ting39	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	77 ms	7200 KiB

Main

#include<bits/stdc++.h>
#define int long long
using namespace std;
signed main(){
	int n;
	cin>>n;
	vector<int> v(n),pre(n),suf(n);
	for(int &i:v) cin>>i;
	for(int i=1;i<n;i++){
		pre[i]=max(0LL,v[i-1]+1-v[i]);
		pre[i]+=pre[i-1];
	}
	for(int i=n-2;i>=0;i--){
		suf[i]=max(0LL,v[i+1]+1-v[i]);
		suf[i]+=suf[i+1];
	}
	int ans=1e18;
	for(int i=0;i<n;i++){
		ans=min(ans,max(pre[i],suf[i]));
	}
	cout<<ans<<endl;
}

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