Submission #414378

#	Time	Username	Problem	Language	Result	Execution time	Memory
414378		grt	Bali Sculptures (APIO15_sculpture)	C++17	100 / 100	173 ms	344 KiB

sculpture

#include <bits/stdc++.h>
#define ST first
#define ND second
#define PB push_back

using namespace std;
using ll = long long;
using pi = pair<int,int>;
using vi = vector<int>;

const int nax = 2000 + 10, qax = 110, INF = 1e9 + 10;
int n, a, b;
int val[nax];
int dp[nax];
bool dp2[qax][qax];

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin >> n >> a >> b;
	for(int i = 1; i <= n; ++i) {
		cin >> val[i];
	}
	if(a == 1) {
		ll num = (1LL << 45) - 1;
		for(int bit = 44; bit >= 0; --bit) {
			num ^= (1LL << bit);
			for(int i = 1; i <= n; ++i) {
				ll sum = 0;
				dp[i] = INF;
				for(int j = i; j >= 1; --j) {
					sum += val[j];
					if((sum | num) == num) {
						dp[i] = min(dp[i], dp[j - 1] + 1);
					}
				}
			}
			if(dp[n] > b) {
				num ^= (1LL << bit);
			}
		}
		cout << num;
	} else {
		ll num = (1LL << 45) - 1;
		for(int bit = 44; bit >= 0; --bit) {
			num ^= (1LL << bit);
			dp2[0][0] = true;
			for(int i = 1; i <= n; ++i) {
				for(int used = 1; used <= b; ++used) {
					ll sum = 0;
					dp2[i][used] = false;
					for(int j = i; j >= 1; --j) {
						sum += val[j];
						if((sum | num) == num) {
							dp2[i][used] |= dp2[j - 1][used - 1];
						}
					}
				}
			}
			bool any = false;
			for(int i = a; i <= b; ++i) any |= dp2[n][i];
			if(!any) num ^= (1LL << bit);
		}
		cout << num;
	}
}

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