Submission #1356898

#	Time	Username	Problem	Language	Result	Execution time	Memory
1356898		toast12	Data Transfer (IOI19_transfer)	C++20	100 / 100	37 ms	1724 KiB

transfer

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

vector<int> get_attachment(vector<int> source) {
    int n = source.size();
    int l;
    if (n == 63) l = 6;
    else l = 8;
    vector<int> ret;
    int x = 0;
    for (int i = 0; i < n; i++) x ^= source[i];
    int sum = 0;
    for (int i = 0; i < n; i++) {
        if (source[i]) sum ^= (i+1);
    }
    for (int i = 0; i < l; i++) {
        if (sum & (1<<i)) ret.push_back(1);
        else ret.push_back(0);
    }
    ret.push_back(x);
    return ret;
}

vector<int> retrieve(vector<int> data) {
    int n = data.size();
    if (n == 70) n = 63;
    else n = 255;
    vector<int> ans;
    for (int i = 0; i < n; i++) ans.push_back(data[i]);
    int l = data.size()-n-1;
    int sum = 0;
    int x = 0;
    for (int i = 0; i < n; i++) {
        if (data[i]) sum ^= (i+1);
        x ^= data[i];
    }
    int a = 0;
    for (int i = n; i < n+l; i++) {
        if (data[i]) a |= (1<<(i-n));
    }
    if (x == data.back() || a == sum) return ans;
    int pos = sum ^ a;
    ans[pos-1] = 1-ans[pos-1];
    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: 60 / 60
• Subtask 2: 40 / 40