Submission #1237760

#	Time	Username	Problem	Language	Result	Execution time	Memory
1237760		tin_le	Bali Sculptures (APIO15_sculpture)	C++20	71 / 100	103 ms	444 KiB

sculpture

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using vll = vector<ll>;
using vvll = vector<vll>;
#define inf 1e9
void solve() {
    int n, l, r; cin >> n >> l >> r;
    vll a(n); 
    for(auto& x : a) cin >> x;
    const int K = 40;
    ll cand = 0;
    auto f = [&](int b) -> bool {
        vi dp_min(n + 1, inf), dp_max(n + 1, -inf);
        dp_min[n] = dp_max[n] = 0;
        for(int i = n - 1; i >= 0; i--) {
            ll x = 0;
            for(int j = i; j < n; j++) {
                x += a[j];
                if((cand >> b) == (x | cand) >> b) {
                    dp_min[i] = min(dp_min[i], dp_min[j + 1] + 1);
                    dp_max[i] = max(dp_max[i], dp_max[j + 1] + 1);
                }
            }
        }
        return dp_min[0] <= r && dp_max[0] >= l;
    };
    for(int b = K - 1; b >= 0; b--) {
        if(f(b)) continue;
        cand ^= 1LL << b;
    }
    cout << cand << '\n';
}

signed main() {
    int t = 1;
    for(int i = 1; i <= t; i++) {   
        solve();
    }
    return 0;
}

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