Submission #1316541

#	Time	Username	Problem	Language	Result	Execution time	Memory
1316541		aaaaaaaa	Data Transfer (IOI19_transfer)	C++20	88 / 100	76 ms	1712 KiB

transfer

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

int K = 9;

std::vector<int> get_attachment(std::vector<int> source) {
	vector<int> ans(K, 0);
	int x = 0, cnt2 = 0;
	for(int i = 0; i < (int) source.size(); ++i){
        x ^= source[i] * (i + 1);
        if(source[i]) cnt2 += 1;
	}
	int cnt = 0;
	for(int i = K - 2; i >= 0; --i){
        if(x & (1 << i)){
            ans[i] = 1;
            cnt += 1;
        }
	}
	ans[K - 1] = (cnt % 2);
    return ans;
}

std::vector<int> retrieve(std::vector<int> data) {
	int n = data.size(), cnt = 0, x = 0;
	for(int j = n - 2, ptr = K - 2; ptr >= 0; --j, --ptr){
        if(data[j]) {
            cnt += 1;
            x |= (1 << ptr);
        }
	}
	vector<int> ans;
	for(int j = 0; j < n - K; ++j){
        ans.push_back(data[j]);
    }
	if((cnt & 1) == data.back()){
        int nx = 0, setbit = 0;
        for(int j = 0; j < n - K; ++j){
            if(data[j]) nx ^= data[j] * (j + 1), setbit += 1;
        }
        if(nx == x) return ans;
        for(int j = 0; j < n - K; ++j){
            if((nx ^ (j + 1)) == x){
                ans[j] ^= 1;
                break;
            }
        }
	}
	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: 48 / 60
• Subtask 2: 40 / 40