Submission #918330

#	Time	Username	Problem	Language	Result	Execution time	Memory
918330		vjudge1	Bali Sculptures (APIO15_sculpture)	C++17	100 / 100	95 ms	4008 KiB

sculpture

#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// using namespace __gnu_pbds;
using namespace std;
//-----------------------
// #define   ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define            ll long long
#define           ull unsigned long long
#define            pb push_back
#define            pf push_front
#define            mp make_pair
#define      mem(f,x) memset(f, x, sizeof(f))
#define   __lcm(a, b) (1ll * a * b) / __gcd(a, b)
#define  bit(mask, i) ((mask >> i) & 1)
#define           pii pair<int, int>
#define           pll pair<ll, ll>
#define            el '\n'
#define             F first
#define             S second
#define         io(x) freopen(x".inp","r",stdin),freopen(x".out","w",stdout)
//-----------------------
const ll INF = 1e18;
const int MOD = 1e9 + 7;
const int MULTI = 0;
const int dx[4] = {0, 0, 1, -1}; //R L D U
const int dy[4] = {1, -1, 0, 0};
//-----AUTHOR trvhung VNG High School for Gifted Student-----

const int LOG = 40;
const int maxn = 2e3 + 5;
int n, A, B, a[maxn];

bool ok(ll mask, ll prev, ll pos) {
	ll temp = (mask >> pos << pos) | prev;
	return temp == prev;
}

namespace onetwo {
	ll dp[maxn][maxn], pref[maxn], sum;
	map<ll, set<ll> > v[maxn];

	bool check() {
		return n <= 50;
	}

	void solve() {
		for (int i = 1; i <= n; ++i)
			pref[i] = pref[i - 1] + a[i];

		sum = 0;
		for (int i = 1; i <= n; ++i) {
			sum += a[i];
			dp[i][1] = sum;
			v[i][1].insert(dp[i][1]);
		}

		for (int i = 1; i <= n; ++i)
			for (int j = 1; j <= min(i, B); ++j) {
				if (j == 1) continue;
				dp[i][j] = INF; sum = a[i];
				for (int k = i - 1; k >= j - 1; --k) {
					for (auto x: v[k][j - 1]) { 
						dp[i][j] = min(dp[i][j], x | sum);
						v[i][j].insert(x | sum);
					}
					sum += a[k];
				}
			}

		ll res = INF;
 		for (int i = A; i <= B; ++i)
 			res = min(res, dp[n][i]);

 		cout << res;
 	}
}

namespace threefour {
	bool check() {
		return n <= 100;
	}

	const int maxn = 1e2 + 5;
	bool dp[maxn][maxn]; ll prev = 0;

	void solve() {
		for (int j = LOG; j >= 0; --j) {
			mem(dp, false); dp[0][0] = true;

			for (int i = 1; i <= n; ++i)
				for (int k = 1; k <= i; ++k) {
					ll sum = 0;
					for (int z = i; z >= 1; --z) {
						sum += a[z];
						if (ok(sum, prev, j))
							dp[i][k] |= dp[z - 1][k - 1];
					}
				}

			bool check = false;
			for (int i = A; i <= B; ++i)
				if (dp[n][i])
					check = true;

			if (!check) prev += (1ll << j);
		}

		cout << prev;
	}
}

namespace five {
	ll prev = 0, dp[maxn];

	void solve() {
		for (int j = LOG; j >= 0; --j) {
			for (int i1 = 1; i1 <= n; ++i1)
				dp[i1] = INF;
			dp[0] = 0;

			for (int i = 1; i <= n; ++i) {
				ll sum = 0;
				for (int z = i; z >= 1; --z) {
					sum += a[z];
					if (ok(sum, prev, j))
						dp[i] = min(dp[i], dp[z - 1] + 1);
				}
			}

			if (dp[n] > B) prev += (1ll << j);
		}

		cout << prev;
	}
}

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    cin >> n >> A >> B;
	for (int i = 1; i <= n; ++i)
		cin >> a[i];

	if (onetwo::check()) return onetwo::solve(), 0;
	if (threefour::check()) return threefour::solve(), 0;
	five::solve();
    
    return 0;
}

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