제출 #920379

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
920379	2024-02-02 13:56:37	Pannda	Data Transfer (IOI19_transfer)	C++17	100 / 100	30 ms	2704 KiB

transfer

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#include "transfer.h"
#include <bits/stdc++.h>
using namespace std;
std::vector<int> get_attachment(std::vector<int> source) {
    int n = source.size();
    int xr = 0;
    for (int i = 0; i < n; i++) {
        xr ^= source[i] * (i + 1);
    }
    int k = n == 63 ? 6 : 8;
    vector<int> attachment(k + 1);
    for (int i = 0; i < k; i++) {
        attachment[i] = xr >> i & 1;
    }
    attachment[k] = __builtin_popcount(xr) & 1;
    return attachment;
}
std::vector<int> retrieve(std::vector<int> data) {
  int n = data.size();
  int k = n == 63 + 7 ? 6 : 8;
  n -= k + 1;
  int parity = 0;
  for (int i = n; i < n + k + 1; i++) {
        parity = (parity + data[i]) & 1;
  }
  if (!(parity & 1)) {
        int xr = 0;
 
 
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• Subtask 1: 60 / 60
• Subtask 2: 40 / 40