Submission #131296

#	Time	Username	Problem	Language	Result	Execution time	Memory
131296		mlyean00	Bali Sculptures (APIO15_sculpture)	C++14	71 / 100	1067 ms	892 KiB

sculpture

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main() {
    int n, a, b;
    cin >> n >> a >> b;
    vector<ll> y(n);
    for (int i = 0; i < n; ++i) {
        cin >> y[i];
    }

    vector<ll> pref(n + 1, 0);
    partial_sum(y.begin(), y.end(), pref.begin() + 1);

    ll ans = 0;
    for (int bit = 40; bit >= 0; --bit) {
        bool dp[b + 1][n + 1];
        memset(dp, 0, sizeof(dp));
        dp[0][0] = true;

        ll b1 = ans >> bit;

        bool p = false;
        for (int i = 0; i < b; ++i) {
            for (int j = 0; j <= n; ++j) {
                if (!dp[i][j]) continue;
                for (int k = j + 1; k <= n; ++k) {
                    ll b2 = (pref[k] - pref[j]) >> bit;
                    dp[i + 1][k] |= (b1 | b2) == b1;
                }
            }
            if (i + 1 >= a && dp[i + 1][n]) p = true;
        }
        if (!p) ans |= (1LL << bit);
    }

    cout << ans << endl;

    return 0;
}

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