Submission #467879

#	Time	Username	Problem	Language	Result	Execution time	Memory
467879		ymm	Bali Sculptures (APIO15_sculpture)	C++17	100 / 100	246 ms	364 KiB

sculpture

///
///   Let the voice of love take you higher!
///

#define _USE_MATH_DEFINES
#define FAST ios::sync_with_stdio(false),cin.tie(0);
#include <bits/stdc++.h>
#define Loop(x, l, r) for(int x = (l); x < (r); ++x)
#define LoopR(x, l, r) for(int x = (r)-1; x >= (l); --x)
#define all(x) x.begin(), x.end()
#define Kill(x) exit((cout << (x) << '\n', 0))
#define YN(flag) ((flag)? "YES": "NO")
#define F first
#define S second
typedef          long long   ll;
typedef unsigned long long  ull;
typedef std::pair<int,int>  pii;
typedef std::pair<ll ,ll >  pll;
using namespace std;

const int N = 2010;
const int sN = 110;
ll a[N];
int n, l, r;

bool stest(ll x)
{
    bitset<sN> dp[sN];
    dp[0][0] = 1;
    Loop(i,0,n)
    {
        ll sum = 0;
        LoopR(j,0,i+1)
        {
            sum += a[j];
            if((sum|x) == x)
                dp[i+1] |= dp[j]<<1;
        }
    }
    Loop(i,l,r+1) if(dp[n][i]) return 1;
    return 0;
}

bool btest(ll x)
{
    int dp[N];
    fill(dp,dp+N,N);
    dp[0] = 0;
    Loop(i,0,n)
    {
        ll sum = 0;
        LoopR(j,0,i+1)
        {
            sum += a[j];
            if((sum|x) == x)
                dp[i+1] = min(dp[i+1], dp[j]+1);
        }
    }
    return dp[n] <= r;
}

bool test(ll x){return l==1?btest(x):stest(x);}

int main()
{
    FAST;
    cin >> n >> l >> r;
    Loop(i,0,n) cin >> a[i];
    ll ans = 0;
    LoopR(i,0,60)
    {
        ll x = ans ^ ((1ll<<i)-1);
        if(!test(x)) ans ^= 1ll<<i;
    }
    cout << ans << '\n';
}

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