Submission #1210292

#	Time	Username	Problem	Language	Result	Execution time	Memory
1210292		k1r1t0	Bali Sculptures (APIO15_sculpture)	C++20	100 / 100	161 ms	652 KiB

sculpture

#include <bits/stdc++.h>

using namespace std;
#define int long long

const int N = 2100;

int n, A, B, y[N], dp[N];
bool can[N][N];

int32_t main() {
	ios::sync_with_stdio(0); cin.tie(0);
	cin >> n >> A >> B;
	for (int i = 1; i <= n; i++)
		cin >> y[i];
	int ans = 0;
	for (int b = 60; b >= 0; b--) {
		if (A == 1) {
			for (int i = 1; i <= n; i++)
				dp[i] = n + 1;
			dp[0] = 0;
			for (int i = 1; i <= n; i++) {
				int sum = y[i];
				for (int j = i - 1; j >= 0; j--) {
					if (((sum >> b) | (ans >> b)) == (ans >> b))
						dp[i] = min(dp[i], dp[j] + 1);
					sum += y[j];
				}
			}
			if (dp[n] > B)
				ans |= (1ll << b);
		} else {
			for (int i = 0; i <= n; i++)
			for (int j = 0; j <= n; j++)
				can[i][j] = false;
			can[0][0] = true;
			for (int i = 1; i <= n; i++) {
				int sum = y[i];
				for (int j = i - 1; j >= 0; j--) {
					if (((sum >> b) | (ans >> b)) == (ans >> b))
						for (int k = 0; k < n; k++)
							if (can[j][k])
								can[i][k + 1] = true;
					sum += y[j];
				}
			}
			bool good = false;
			for (int i = A; i <= B && !good; i++)
				if (can[n][i]) good = true;
			if (!good)
				ans |= (1ll << b);
		}
	}
	cout << ans;
}

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