Submission #909593

#	Time	Username	Problem	Language	Result	Execution time	Memory
909593		oblantis	Bali Sculptures (APIO15_sculpture)	C++17	100 / 100	67 ms	600 KiB

sculpture

#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#pragma GCC optimize("O3,unroll-loops")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define all(v) v.begin(), v.end()
#define pb push_back
#define ss second
#define ff first
#define vt vector
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef pair<int, int> pii;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
const int inf = 1e9;
const int mod = 1e9+7;
const int maxn = 2e3 + 1;
int n, a, b;
int y[maxn];
int check(ll s) {
	if(n < 200){
		bool dp[n][n + 2];
		memset(dp, 0, sizeof dp);
		for(int i = 0; i < n; i++){
			ll t = 0;
			for(int j = i; j >= 0; j--){
				t += y[j];
				if(!(s & t)){
					if(j == 0)dp[i][1] = 1;
					else {
						for(int o = 0; o <= n; o++){
							if(dp[j - 1][o])dp[i][o + 1] = 1;
						}
					}
				}
			}
		}
		for(int i = a; i <= b; i++){
			if(dp[n - 1][i])return 0;
		}
		return 1;
	}
	int dp[n];
	for(int i = 0; i < n; i++){
		dp[i] = maxn;
		ll t = 0;
		for(int j = i; j >= 0; j--){
			t += y[j];
			if(!(s & t)){
				if(j == 0)dp[i] = 1;
				else dp[i] = min(dp[i], dp[j - 1] + 1);
			}
		}
	}
	return (dp[n - 1] > b);
}
void solve() {
	cin >> n >> a >> b;
	for(int i = 0; i < n; i++){
		cin >> y[i];
	}
	ll s = 0, ans = 0;
	for(int i = 40; i >= 0; i--){
		s += (1ll << i);
		if(check(s))s -= (1ll << i), ans += (1ll << i);
	}
	cout << ans << '\n';
}
int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int times = 1;
	//cin >> times;
	for(int i = 1; i <= times; i++) {
		solve();
	}
	return 0;
}

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