oj.uz

Submission #213465

# Submission time Handle Problem Language Result Execution time Memory
213465 2020-03-25T22:37:13 Z tri Broken Device (JOI17_broken_device) C++14
0 / 100
 2000 ms 4856 KB 
#include <bits/stdc++.h>
#include "Annalib.h"

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;

#define pb push_back
#define f first
#define s second


int N;

const int MAXN = 155;
const int MAXV = 1 << 20;

int data[MAXN];

mt19937 re(1377);
uniform_int_distribution<int> uniform_dist(0, MAXV);

int group[MAXN];
vi mem[3];

int broken[MAXN];

int pos[MAXV];

int output[MAXN];

void init() {
    for (int i = 0; i < N; i++) {
        data[i] = uniform_dist(re);
    }

    fill(group, group + N / 3, 0);
    fill(group + N / 3, group + 2 * N / 3, 1);
    fill(group + 2 * N / 3, group + N, 2);

    shuffle(group, group + N, re);

    for (int i = 0; i < 3; i++) {
        mem[i].clear();
    }

    for (int i = 0; i < N; i++) {
        if (!broken[i]) {
            mem[group[i]].pb(i);
        }
    }
}

// assert 20 bit frag
void calc(int group, int frag) {
    memset(pos, 0, sizeof(pos));

    vi &cMem = mem[group];
    assert(cMem.size() >= 20);

    if (cMem.size() >= 40) {
        cMem.erase(cMem.end() - (cMem.size() - 40), cMem.end());
    }

    int hSize = cMem.size() / 2;

//    cout << hSize << endl;

    for (int bSet = 0; bSet < (1 << hSize); bSet++) {
        int partial = 0;
        for (int j = 0; j < hSize; j++) {
            if (bSet & (1 << j)) {
                partial ^= data[cMem[j]];
            }
        }
        pos[partial] = bSet;
    }

    int rem = cMem.size() - hSize;

    for (int bSet = 0; bSet < (1 << rem); bSet++) {
        int partial = 0;
        for (int j = 0; j < rem; j++) {
            if (bSet & (1 << j)) {
                partial ^= data[cMem[hSize + j]];
            }
        }

        int desire = frag ^partial;
        if (pos[desire]) {
            int fSet = pos[desire];

            for (int j = 0; j < hSize; j++) {
                if (fSet & (1 << j)) {
                    output[cMem[j]] = 1;
                }
            }

            for (int j = 0; j < rem; j++) {
                if (bSet & (1 << j)) {
                    output[cMem[hSize + j]] = 1;
                }
            }

            return;
        }
    }

    assert(false);
}


void Anna(int iN, ll X, int K, int P[]) {
    N = iN;
    assert(N == 150);

    fill(broken, broken + N, 0);
    for (int i = 0; i < K; i++) {
        broken[P[i]] = true;
    }

//    cout << "read" << endl;

    init();

//    cout << "init" << endl;

    memset(output, 0, sizeof(output));

    for (int g = 0; g < 3; g++) {
        int frag = X & ((1 << 20) - 1);
        calc(g, frag);

        X >>= 20;
    }

    for (int i = 0; i < N; i++) {
        Set(i, output[i]);
    }

//    cout << "done" << endl;
//    ps(mem[0]);
}

#include <bits/stdc++.h>
#include "Brunolib.h"

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;

#define pb push_back
#define f first
#define s second

namespace debug {
    const int DEBUG = true;

    template<class T1, class T2>
    void pr(const pair<T1, T2> &x);

    template<class T, size_t SZ>
    void pr(const array<T, SZ> &x);

    template<class T>
    void pr(const vector<T> &x);

    template<class T>
    void pr(const set<T> &x);

    template<class T1, class T2>
    void pr(const map<T1, T2> &x);

    template<class T>
    void pr(const T &x) { if (DEBUG) cout << x; }

    template<class T, class... Ts>
    void pr(const T &first, const Ts &... rest) { pr(first), pr(rest...); }

    template<class T1, class T2>
    void pr(const pair<T1, T2> &x) { pr("{", x.f, ", ", x.s, "}"); }

    template<class T>
    void prIn(const T &x) {
        pr("{");
        bool fst = 1;
        for (auto &a : x) {
            pr(fst ? "" : ", ", a), fst = 0;
        }
        pr("}");
    }

    template<class T, size_t SZ>
    void pr(const array<T, SZ> &x) { prIn(x); }

    template<class T>
    void pr(const vector<T> &x) { prIn(x); }

    template<class T>
    void pr(const set<T> &x) { prIn(x); }

    template<class T1, class T2>
    void pr(const map<T1, T2> &x) { prIn(x); }

    void ps() { pr("\n"), cout << flush; }

    template<class Arg, class... Args>
    void ps(const Arg &first, const Args &... rest) {
        pr(first, " ");
        ps(rest...);
    }
}
using namespace debug;


namespace rdup {

    int N;

    const int MAXN = 155;
    const int MAXV = 1 << 20;

    int data[MAXN];

    mt19937 re(1377);
    uniform_int_distribution<int> uniform_dist(0, MAXV);

    int group[MAXN];
    vi mem[3];

    int broken[MAXN];

    void init() {
        for (int i = 0; i < N; i++) {
            data[i] = uniform_dist(re);
        }

        fill(group, group + N / 3, 0);
        fill(group + N / 3, group + 2 * N / 3, 1);
        fill(group + 2 * N / 3, group + N, 2);

        shuffle(group, group + N, re);

        for (int i = 0; i < 3; i++) {
            mem[i].clear();
        }

        for (int i = 0; i < N; i++) {
            if (!broken[i]) {
                mem[group[i]].pb(i);
            }
        }
    }
}

ll Bruno(int iN, int A[]) {
    rdup::N = iN;
    assert(rdup::N == 150);

    fill(rdup::broken, rdup::broken + rdup::N, 0);

    rdup::init();

//    ps(rdup::mem[0]);

    ll ans = 0;
    for (int group = 2; group >= 0; group--) {
        ans <<= 20;
        ll frag = 0;
        for (int i : rdup::mem[group]) {
            if (A[i]) {
                frag ^= rdup::data[i];
            }
        }
        ans |= frag;
    }
//    cout << ans << endl;
    return ans;
}

Subtask #1
0.0 / 100.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2098 ms 4604 KB Time limit exceeded
2 Execution timed out 2090 ms 4624 KB Time limit exceeded
3 Execution timed out 2080 ms 4600 KB Time limit exceeded
4 Execution timed out 2090 ms 4600 KB Time limit exceeded
5 Execution timed out 2096 ms 4600 KB Time limit exceeded
6 Execution timed out 2079 ms 4608 KB Time limit exceeded
7 Execution timed out 2098 ms 4500 KB Time limit exceeded
8 Execution timed out 2083 ms 4600 KB Time limit exceeded
9 Execution timed out 2091 ms 4600 KB Time limit exceeded
10 Execution timed out 2090 ms 4728 KB Time limit exceeded
11 Execution timed out 2089 ms 4600 KB Time limit exceeded
12 Execution timed out 2094 ms 4728 KB Time limit exceeded
13 Execution timed out 2084 ms 4728 KB Time limit exceeded
14 Execution timed out 2086 ms 4576 KB Time limit exceeded
15 Execution timed out 2086 ms 4600 KB Time limit exceeded
16 Execution timed out 2091 ms 4600 KB Time limit exceeded
17 Execution timed out 2092 ms 4756 KB Time limit exceeded
18 Execution timed out 2089 ms 4728 KB Time limit exceeded
19 Execution timed out 2099 ms 4480 KB Time limit exceeded
20 Execution timed out 2090 ms 4480 KB Time limit exceeded
21 Execution timed out 2089 ms 4732 KB Time limit exceeded
22 Execution timed out 2092 ms 4600 KB Time limit exceeded
23 Execution timed out 2086 ms 4620 KB Time limit exceeded
24 Execution timed out 2090 ms 4576 KB Time limit exceeded
25 Execution timed out 2088 ms 4600 KB Time limit exceeded
26 Execution timed out 2092 ms 4728 KB Time limit exceeded
27 Execution timed out 2090 ms 4856 KB Time limit exceeded
28 Execution timed out 2085 ms 4620 KB Time limit exceeded
29 Execution timed out 2090 ms 4600 KB Time limit exceeded
30 Execution timed out 2087 ms 4728 KB Time limit exceeded
31 Execution timed out 2093 ms 4856 KB Time limit exceeded
32 Execution timed out 2089 ms 4612 KB Time limit exceeded
33 Execution timed out 2096 ms 4600 KB Time limit exceeded
34 Execution timed out 2083 ms 4516 KB Time limit exceeded
35 Execution timed out 2093 ms 4728 KB Time limit exceeded
36 Execution timed out 2098 ms 4600 KB Time limit exceeded
37 Execution timed out 2095 ms 4600 KB Time limit exceeded
38 Execution timed out 2065 ms 4732 KB Time limit exceeded
39 Execution timed out 2091 ms 4600 KB Time limit exceeded
40 Execution timed out 2086 ms 4600 KB Time limit exceeded