Submission #208636

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
208636	2020-03-12 00:20:39	eriksuenderhauf	Data Transfer (IOI19_transfer)	C++14	100 / 100	279 ms	2664 KiB

transfer

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#include <bits/stdc++.h>
#include "transfer.h"
#define vi vector<int>
#define pb push_back
using namespace std;
vi get_attachment(vi source) {
  int n = source.size();
  vi ret;
  int xo = 0;
  for (int i = 0; i < n; i++)
    xo ^= source[i];
  ret.pb(xo);
  for (int i = 0; (1 << i) < n; i++) {
    xo = 0;
    for (int j = 0; j < n; j++)
      if ((j+1) & (1 << i))
        xo ^= source[j];
    ret.pb(xo);
  }
  return ret;
}
vi retrieve(vi data) {
  int n = data.size() < 255 ? 63 : 255;
  vi ret;
  int xo = 0;
  for (int i = 0; i < n; i++)
    xo ^= data[i];
  ret.pb(xo);
 
 
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• Subtask 1: 60 / 60
• Subtask 2: 40 / 40