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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#125044#6669. Mapabashkort#0 1ms3660kbC++204.2kb2023-07-16 00:01:282024-07-04 00:42:57

Judging History

你现在查看的是最新测评结果

  • [2024-07-04 00:42:57]
  • 评测
  • 测评结果:0
  • 用时:1ms
  • 内存:3660kb
  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-07-16 00:01:28]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

string encode(vector<int> a, int b) {
    if (size(a) == 0) {
        return {};
    }
    if (size(a) <= 1) {
        string s;
        while (b > 0) {
            s += '0' + bool(a[0] & b);
            b /= 2;
        }
        return s;
    }
    assert(b > 0);
    int mid = 0;
    while (mid < size(a) && !(a[mid] & b)) {
        mid += 1;
    }
    string ans;
    int h = __lg(size(a)) + 1;
    for (int i = 0; i < h; ++i) {
        ans += '0' + (mid >> i & 1);
    }
    string l = encode(vector(a.begin(), a.begin() + mid), b / 2);
    string r = encode(vector(a.begin() + mid, a.end()), b / 2);
    return ans + l + r;
}

void decode(vector<int> &ans, int &p, int n, const string &s, int b, int up) {
    if (n == 0) {
        return;
    }
    if (n == 1) {
        while (b > 0) {
            up += (s[p++] - '0') * b;
            b /= 2;
        }
        return ans.push_back(up);
    }
    int h = __lg(n) + 1;
    int mid = 0;
    for (int i = 0; i < h; ++i) {
        if (s[p++] == '1') {
            mid += 1 << i;
        }
    }
    decode(ans, p, mid, s, b / 2, up);
    decode(ans, p, n - mid, s, b / 2, up + b);
}

string encodePerm(const vector<int> &p) {
    int n = size(p);
    string s;
    vector<bool> used(n);
    for (int i = 0; i < n - 1; ++i) {
        int f = find(p.begin(), p.end(), i) - p.begin();
        int pos = count(used.begin(), used.begin() + f, false);
        used[f] = true;
        int h = __lg(n - i);
        for (int k = 0; k < h; ++k) {
            s += '0' + (pos >> k & 1);
        }
    }
    return s;
}

vector<int> decodePerm(int n, const string &s) {
    vector<int> p(n, -1);
    int pnt = 0;
    for (int i = 0; i < n - 1; ++i) {
        int h = __lg(n - i);
        int pos = 0;
        for (int k = 0; k < h; ++k) {
            pos += (s[pnt++] - '0') << k;
        }
        for (int j = 0; j < n; ++j) {
            if (p[j] == -1 && pos-- == 0) {
                p[j] = i;
                break;
            }
        }
    }
    p[find(p.begin(), p.end(), -1) - p.begin()] = n - 1;
    return p;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    constexpr int A = 1e9 + 1;

    int type;
    cin >> type;

    mt19937 rnd(1337);

    if (type == 1) {
        int n;
        cin >> n;

        map<int, int> mp;
        vector<int> x(n), y(n);

        for (int i = 0; i < n; ++i) {
            int a, b;
            cin >> a >> b;
            int xr = rnd() % A;
            a ^= xr, b ^= xr;
            mp[a] = b;
            x[i] = a, y[i] = b;
        }

        sort(x.begin(), x.end());
        sort(y.begin(), y.end());

        assert(unique(x.begin(), x.end()) == x.end());
        assert(unique(y.begin(), y.end()) == y.end());

        string ex = encode(x, 1 << 29);
        string ey = encode(y, 1 << 29);
        vector<int> p(n);
        for (int i = 0; i < n; ++i) {
            p[i] = lower_bound(y.begin(), y.end(), mp[x[i]]) - y.begin();
        }
        string ep = encodePerm(p);

//        for (int t = 0; t < 3; ++t) {
//            for (int i = 0; i < 12; ++i) {
//                cout << (size(t == 0 ? ex : t == 1 ? ey : ep) >> i & 1);
//            }
//        }
        cout << size(ex + ey + ep) << '\n';
        cout << ex << ey << ep << '\n';
    } else {
        int n, q, k;
        cin >> n >> q >> k;

        vector<int> xr(n);

        for (int i = 0; i < n; ++i) {
            xr[i] = rnd() % A;
        }

        string s;
        cin >> s;

        vector<int> x, y, p;
        int i = 0;

        decode(x, i, n, s, 1 << 29, 0);
        decode(y, i, n, s, 1 << 29, 0);
        p = decodePerm(n, s.substr(i));

        for (int qwq = 0; qwq < q; ++qwq) {
            int a;
            cin >> a;
            for (int r : xr) {
                int j = lower_bound(x.begin(), x.end(), a ^ r) - x.begin();
                if (j < n && (x[j] ^ r) == a) {
                    cout << (y[p[j]] ^ r) << '\n';
                    break;
                }
            }
        }
    }

    return 0;
}

Details

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Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 0
Wrong Answer
time: 1ms = 1ms + 0ms
memory: 3660kb,3616kb

input:

1
100
495528311 963488152
269613430 443544124
700489871 792354118
151890319 506569919
180452297 13229948
684464994 543841485
978085128 903812192
238355172 441140842
28061035 783291471
530823766 718942732
936853023 439421263
201361623 226633955
304644844 778868118
864860135 461524170
88300500 6959354...

output:

5623
1110110001110000011101010100100000011010101101101010101001011000011001011101010100010000100111111001011011111100100011110100111111111111000101001101101010011000000100101110100111110000100010011000101100000101010101001110010000001111110101000110101100110100001000011101001100111011001011010111010...

input:

2
100 79 5623
1110110001110000011101010100100000011010101101101010101001011000011001011101010100010000100111111001011011111100100011110100111111111111000101001101101010011000000100101110100111110000100010011000101100000101010101001110010000001111110101000110101100110100001000011101001100111011001011...

output:

805049984
741733081
189151907
606992213
369790973
1045045811
901699263
51378798
53348882
833481437
687389788
788232088
1056511811
62143073
880287542
507521785
219358066
143963809
95403632
206848250
760551971
387873482
516148874
185308078
544727662
457318486
973565788
514132950
182884270
660085732
50...

result:

wrong answer wrong answer on query #1: read 805049984 but expected 310305144