Submission #954286

#	Time	Username	Problem	Language	Result	Execution time	Memory
954286		tnknguyen_	Bali Sculptures (APIO15_sculpture)	C++14	100 / 100	73 ms	604 KiB

sculpture

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n' 
#define pii pair<int, int>
#define MASK(k) (1LL << (k))

const int MX = 2005;
const int LG = 45;

int a[MX];
int n, A, B;

pii check(int mask){
    vector<int> mi(n + 5, 1e18);
    vector<int> ma(n + 5, -1e18);
    mi[0] = ma[0] = 0;

    for(int i=1; i<=n; ++i){
        int sum = 0;
        for(int j=i; j>=1; --j){
            sum += a[j];
            if((sum | mask) == mask){
                mi[i] = min(mi[i], mi[j-1] + 1);
                ma[i] = max(ma[i], ma[j-1] + 1);
            }
        }
    }
    
    return {mi[n], ma[n]};
}

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    //freopen("main.inp","r",stdin);
    //freopen("main.out","w",stdout);

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


    int ans = MASK(LG) - 1;
    for(int i=LG-1; i>=0; --i){
        int t = ans ^ MASK(i);
        pii p = check(t);
        if(p.second >= A && p.first <= B){
            ans ^= MASK(i);
        }
    }
    cout<<ans;

    return 0;
}

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