Submission #131149

#	Time	Username	Problem	Language	Result	Execution time	Memory
131149		youssefbou62	Hacker (BOI15_hac)	C++14	40 / 100	94 ms	504 KiB

hac

#include  <bits/stdc++.h>

using namespace std;

#define mp make_pair
#define fi first
#define se second
#define all(v) v.begin(),v.end()
#define allarr(a) a , a + n
#define ll long long
#define ull unsigned long long 
#define pb push_back
#define fastio ios_base::sync_with_stdio(false) ; cin.tie(NULL); cout.tie(NULL)
typedef pair<int, int> pi;
typedef pair<ll,ll> pll; 
typedef pair<int,pi> trp ;
typedef vector<pi> vpi;
typedef vector<pll> vpll ;
// int ab  (int  x ) { return (x>0?x:-x); }

const int N = 5005 ;
int a[N] , pref[N],n; 

int sum(int l , int r ){
	if( l > r )return 0; 
	if( l == 0 )return pref[r]; 
	return pref[r]-pref[l-1] ; 
}

int main(){
cin >> n ; 
for(int i= 0 ;  i< n ; i++ )cin >> a[i] ; 
pref[0] = a[0] ; 
for(int i =  1 ; i < n ; i++ ){
	pref[i] = pref[i-1] + a[i] ; 
}
int ans = 0; 
for(int start = 0 ; start < n ; start ++ ){
	int left , cnt = 1e9; 
	for(int right = 1 ; right <= (n/2)+(n%2) ; right ++ ){
		left = (n/2+n%2)-right; 
		int s = sum(start,min(n-1,start+right-1)); 
		s += sum(0,right - (n+1-start) ) ; 
		s += sum(max(0,start-left),start-1);
		s += sum(n-(left-start),n-1);
		cnt = min(s,cnt);

	}
	ans = max ( cnt , ans ) ; 
}
cout << ans << endl; 
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 40