Submission #1344646

#	Time	Username	Problem	Language	Result	Execution time	Memory
1344646		killerzaluu	Data Transfer (IOI19_transfer)	C++20	0 / 100	3 ms	1724 KiB

transfer

#include <bits/stdc++.h>
using namespace std;

vector<int> get_attachment(vector<int> source) {
    int n = source.size();

    int k = 0;
    int sad = 0;
    while (sad < n) {
        sad = sad * 2 + 1;
        k++;
    }
    k--;

    vector<int> ans(k + 1, 0);

    for (int i = 1; i <= n; i++) {
        int temp = i;
        int cnt = 0;

        while (temp > 0) {
            if (temp % 2 == 1) ans[cnt] ^= source[i - 1];
            temp /= 2;
            cnt++;
        }

        ans[k] ^= source[i - 1];
    }

    return ans;
}

vector<int> retrieve(vector<int> data) {
    int sz = data.size();

    int n = -1, k = -1;
    for (int i = 0; i <= 20; i++) {
        int tempn = (1 << i) - 1;
        if (tempn + i + 1 == sz) {
            n = tempn;
            k = i;
            break;
        }
    }

    vector<int> a(n + 1), bad(k + 1), now(k + 1, 0);

    for (int i = 1; i <= n; i++) a[i] = data[i - 1];
    for (int i = 0; i <= k; i++) bad[i] = data[n + i];

    for (int i = 1; i <= n; i++) {
        int temp = i;
        int cnt = 0;

        while (temp > 0) {
            if (temp % 2 == 1) now[cnt] ^= a[i];
            temp /= 2;
            cnt++;
        }

        now[k] ^= a[i];
    }

    int sum = 0;
    for (int i = 0; i < k; i++) {
        if (now[i] != bad[i]) sum += (1 << i);
    }

    if (now[k] != bad[k]) {
        if (sum != 0) a[sum] ^= 1;
    }

    vector<int> ans;
    for (int i = 1; i <= n; i++) ans.push_back(a[i]);

    return ans;
}

Compilation message (stderr)

grader.cpp: In instantiation of 'void shuffle(std::vector<T>&) [with T = Scenario]':
grader.cpp:200:10:   required from here
grader.cpp:28:23: warning: 'void std::random_shuffle(_RAIter, _RAIter) [with _RAIter = __gnu_cxx::__normal_iterator<Scenario*, vector<Scenario> >]' is deprecated: use 'std::shuffle' instead [-Wdeprecated-declarations]
   28 |         random_shuffle(v.begin(), v.end());
      |         ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/13/algorithm:61,
                 from grader.cpp:8:
/usr/include/c++/13/bits/stl_algo.h:4581:5: note: declared here
 4581 |     random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~~~~~~~~~~~

• Subtask 1: 0 / 60
• Subtask 2: 0 / 40