제출 #1359746

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1359746		osmiyum	Data Transfer (IOI19_transfer)	C++20	100 / 100	23 ms	1724 KiB

transfer

#include "transfer.h"

std::vector<int> get_attachment(std::vector<int> source) {
	std::vector<int> v;
	int x = 0;
	for (int i = 0; i < source.size(); i++)
		if (source[i]) x ^= (i + 1);

	int last = 0;
	if (source.size() < 64) {
		for (int i = 0; i < 6; i++) {
			v.push_back(x & 1);
			if (x & 1) last = 1 - last;
			x >>= 1;
		}
	} else {
		for (int i = 0; i < 8; i++) {
			v.push_back(x & 1);
			if (x & 1) last = 1 - last;
			x >>= 1;
		}
	}
	v.push_back(last);
	return v;
}

std::vector<int> retrieve(std::vector<int> data) {
	int last = data.back();
	data.pop_back();
	int actual_last = 0, x = 0;
	if (data.size() < 71) {
		for (int i = 0; i < 6; i++) {
			x <<= 1;
			x += data.back();
			if (data.back()) actual_last = 1 - actual_last;
			data.pop_back();
		}
	} else {
		for (int i = 0; i < 8; i++) {
			x <<= 1;
			x += data.back();
			if (data.back()) actual_last = 1 - actual_last;
			data.pop_back();
		}
	}

	if (actual_last != last) return std::vector<int>(data.begin(), data.end());

	int actual_x = 0;
	for (int i = 0; i < data.size(); i++) {
		if (data[i]) actual_x ^= (i + 1);
	}

	int error = actual_x ^ x;
	if (error == 0) return data;

	data[error - 1] = 1 - data[error - 1];
	return data;
}

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)
      |     ^~~~~~~~~~~~~~

• 서브태스크 1: 60 / 60
• 서브태스크 2: 40 / 40