제출 #1344641

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1344641		killerzaluu	Data Transfer (IOI19_transfer)	C++20	0 / 100	3 ms	1724 KiB

transfer

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

vector<int> make_parity(vector<int> a) {
    int n = a.size();
    int k = 0;
    while ((1 << k) - 1 < n) k++;

    vector<int> b(k, 0);

    for (int j = 1; j <= n; j++) {
        for (int i = 0; i < k; i++) {
            if ((j >> i) & 1) b[i] ^= a[j - 1];
        }
    }

    return b;
}

int find_n(int sz) {
    for (int k = 0; k <= 25; k++) {
        int n = (1 << k) - 1;
        if (n + k == sz) return n;
    }
    return -1;
}

vector<int> get_attachment(vector<int> source) {
    return make_parity(source);
}

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

    vector<int> a(n), b;
    for (int i = 0; i < n; i++) a[i] = data[i];
    for (int i = n; i < sz; i++) b.push_back(data[i]);

    vector<int> now = make_parity(a);
    if (now == b) return a;

    for (int i = 0; i < n; i++) {
        a[i] ^= 1;
        now = make_parity(a);
        if (now == b) return a;
        a[i] ^= 1;
    }

    return a;
}

컴파일 시 표준 에러 (stderr) 메시지

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