Submission #974670

#	Time	Username	Problem	Language	Result	Execution time	Memory
974670		steveonalex	Broken Device (JOI17_broken_device)	C++17	100 / 100	50 ms	3184 KiB

Anna

#include <bits/stdc++.h>
#include "Annalib.h"
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define ALL(v) (v).begin(), (v).end()
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
 
// mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng(1);
ll rngesus(ll l, ll r){return ((ull) rng()) % (r - l + 1) + l;}
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
 
ll LASTBIT(ll mask){return mask & (-mask);}
ll pop_cnt(ll mask){return __builtin_popcountll(mask);}
ll ctz(ll mask){return __builtin_ctzll(mask);}
ll clz(ll mask){return __builtin_clzll(mask);}
ll logOf(ll mask){return 63 - clz(mask);}
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b){a = b; return true;}
        return false;
    }
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b){a = b; return true;}
        return false;
    }
template <class T>
    void printArr(T& a, string separator = " ", string finish = "\n", ostream& out = cout){
        for(auto i: a) out << i << separator;
        out << finish;
    }
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

struct XorBasis{
    static const int N = 60;
    array<ll, N> a, og;
    array<ll, N> S;
    XorBasis(){
        for(int i = 0; i<N; ++i) a[i] = og[i] = 0;
        for(int i = 0; i<N; ++i) S[i] = 0;
    }

    ll add(ll x){
        ll y = x;
        ll T = 0;

        while(x > 0){
            int i = logOf(x);
            if (a[i] == 0) {
                a[i] = x;
                og[i] = y;
                T ^= MASK(i); 
                S[i] = T;
                break;
            }
            else {
                x ^= a[i];
                T ^= S[i];
            }
        }

        return T;
    }

    vector<ll> getSet(ll x){
        ll arr = add(x);
        vector<ll> ans;
        for(int i = 0; i<N; ++i) if (GETBIT(arr, i)) ans.push_back(og[i]);
        sort(ALL(ans));
        return ans;
    }


};

// void Set(int i, int j){cout << j << ",";}

void Anna(int n, ll X, int k, int p[]){
    vector<bool> banned(n);
    for(int i = 0; i<k; ++i) banned[p[i]] = 1;

    vector<ll> a(n);
    for(int i = 0; i<n; ++i) a[i] = rngesus(0, MASK(60) - 1);
    
    XorBasis basic;
    for(int i = 0; i<n; ++i) if (!banned[i]) basic.add(a[i]);

    vector<bool> tape(n);

    vector<ll> S = basic.getSet(X);

    for(int i = 0; i<n; ++i) if (!banned[i]) tape[i] = binary_search(ALL(S), a[i]);

    for(int i = 0; i<n; ++i) Set(i, tape[i]);
    
}
 
// int main(void){
//     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

//     int p[] = {0};
//     Anna(150, 69420, 1, p);

//     return 0;
// }

Bruno

#include <bits/stdc++.h>
#include "Brunolib.h"
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define ALL(v) (v).begin(), (v).end()
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
 
// mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng(1);
ll rngesus(ll l, ll r){return ((ull) rng()) % (r - l + 1) + l;}
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
 
ll LASTBIT(ll mask){return mask & (-mask);}
ll pop_cnt(ll mask){return __builtin_popcountll(mask);}
ll ctz(ll mask){return __builtin_ctzll(mask);}
ll clz(ll mask){return __builtin_clzll(mask);}
ll logOf(ll mask){return 63 - clz(mask);}
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b){a = b; return true;}
        return false;
    }
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b){a = b; return true;}
        return false;
    }
template <class T>
    void printArr(T& a, string separator = " ", string finish = "\n", ostream& out = cout){
        for(auto i: a) out << i << separator;
        out << finish;
    }
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

ll Bruno(int n, int A[]){
    vector<ll> a(n);
    for(int i = 0; i<n; ++i) a[i] = rngesus(0, MASK(60) - 1);
    ll X = 0;
    for(int i = 0; i<n; ++i) if (A[i]) X ^= a[i];
    return X;
}
 
// int main(void){
//     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

//     int A[] = {0,1,1,1,1,0,1,1,1,0,1,1,1,0,0,1,0,1,0,1,1,1,1,1,0,1,0,0,1,1,1,0,0,1,0,1,0,0,0,0,1,1,1,0,0,0,0,1,1,0,1,1,0,1,0,0,0,0,1,0,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
//     cout << Bruno(150, A) << "\n";

//     return 0;
// }

• Subtask 1: 100 / 100