Submission #730473

#	Time	Username	Problem	Language	Result	Execution time	Memory
730473		hoainiem	Bali Sculptures (APIO15_sculpture)	C++14	37 / 100	4 ms	724 KiB

sculpture

#include <bits/stdc++.h>
#define fi first
#define se second
#define lc id<<1
#define rc id<<1^1
const long long inf = 1e18;
using namespace std;
typedef pair<int, int> pii;
const long long mx = (1LL << 41) - 1;
int n, l, r;
long long a[2008], orr[2008][2008];
long long ans = 0;
bitset<2008>f[2008];
bool check(int x){
    f[0].reset();
    f[0].set(0);
    for (int j = 1; j <= r; j++){
        for (int i = 0; i <= n; i++)
            if (i < j)
                f[j].reset(i);
            else{
                f[j].reset(i);
                for (int pos = 1; pos <= i && !f[j].test(i); pos++)
                    if (!(x & orr[pos][i]) && f[j - 1].test(pos - 1))
                        f[j].set(i);
            }
        if (f[j].test(n) && j >= l)
            return true;
    }
    return false;
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin >> n >> l >> r;
    for (int i = 1; i <= n; i++)
        cin >> a[i];
    for (int i = 1; i <= n; i++)
        for (int j = i; j <= n; j++)
            orr[i][j] = orr[i][j - 1] + a[j];
    for (long long i = 1LL << 41; i > 0; i >>= 1)
        ans += i * check(ans + i);
    cout << (int)(mx ^ ans);
    return 0;
}

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