Submission #871165

#	Time	Username	Problem	Language	Result	Execution time	Memory
871165		NintsiChkhaidze	Bali Sculptures (APIO15_sculpture)	C++17	71 / 100	1088 ms	10844 KiB

sculpture

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define s second
#define f first
#define int ll
using namespace std;

const int N = 2005;
int p[N],a[N],dp[N][N];
int n,A,B;

bool check(int x,int len){
	
	for (int i = 0; i <= n; i++)
		for (int gr = 0; gr <= n; gr++)
			dp[i][gr] = 0;
			
	dp[0][0] = 1;
	for (int i = 1; i <= n; i++){
		for (int j = 1; j <= i; j++){
			for (int gr = 1; gr <= n; gr++){
				if (dp[i][gr]) continue;
				
				if (dp[j - 1][gr - 1]){
					int s = p[i] - p[j - 1];
					bool c = 1;
					for (int k = 40; k >= len; k--){
						if ((s & (1LL<<k)) > 0 && (x & (1LL<<k)) == 0) {c=0; break;}
					}
					if (c) dp[i][gr] = 1;
				}
			}
		}
	}
	
	for (int gr = A; gr <= B; gr++){
		if (dp[n][gr]) return 1;
	}
	return 0;
}
signed main() {
    ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);

	cin>>n>>A>>B;
	
	for (int i = 1; i <= n; i++){
		cin >> a[i];
		p[i] = p[i - 1] + a[i];
	}
	
	int ans=0;
	for (int b = 40; b >= 0; b--){
		if (check(ans,b)) continue;
		ans |= (1LL<<b);
	}
	cout<<ans;
} 
/*
6 1 3
8 1 2 1 5 4
*/

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 21 / 21
• Subtask 4: 25 / 25
• Subtask 5: 0 / 29