Submission #770924

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
770924	2023-07-02 07:01:28	rxlfd314	Data Transfer (IOI19_transfer)	C++17	Compilation error	0 ms	0 KiB

transfer

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#include "transfer.h"
#include <bits/stdc++.h>
using namespace std;
void yeet(int n, vector<int> &v, vector<int> &source) {
  for (int j = 0; (1 << j) <= n; j++) {
    v.push_back(0);
    for (int i = 1; i <= n; i++) {
      if (i & 1 << j) {
        v[j] ^= source[i-1];
      }
    }
  }
}
vector<int> get_attachment(vector<int> source) {
  int N = source.size();
  vector<int> ret;
  yeet(N, ret, source);
  ret.push_back(0);
  for (int i = 0; i < N; i++) {
    ret.back() ^= source[i];
  }
  return ret;
}
vector<int> retrieve(vector<int> data) {
  int N = data.size() < 255 ? 63 : 255;
  vector<int> test;
  yeet(N, test, data);
 
 
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Compilation message (stderr)

transfer.cpp: In function 'std::vector<int> retrieve(std::vector<int>)':
transfer.cpp:31:55: error: 'M' was not declared in this scope
   31 |  if (test == vector<int>(data.begin()+N, data.begin()+M-1)) {
      |                                                       ^
transfer.cpp:38:15: error: 'M' was not declared in this scope
   38 |  if (p ^ data[M-1]) {
      |               ^