#include "transfer.h"
#include <bits/stdc++.h>
using namespace std;
template<class T, class U>
void ckmin(T &a, U b)
{
if (a > b) a = b;
}
template<class T, class U>
void ckmax(T &a, U b)
{
if (a < b) a = b;
}
#define MP make_pair
#define PB push_back
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define FOR(i, a, b) for (auto i = (a); i < (b); i++)
#define FORD(i, a, b) for (auto i = (a) - 1; i >= (b); i--)
#define SZ(x) ((int) ((x).size()))
#define ALL(x) (x).begin(), (x).end()
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpi;
typedef vector<pll> vpl;
vi get_attachment(vi source)
{
int n = SZ(source);
int k = 33 - __builtin_clz(n);
vi res(k);
int stor = 0;
FOR(i, 0, n)
{
if (source[i]) stor ^= (i + 1);
}
FOR(i, 0, k - 1)
{
res[i] = ((stor & (1 << i)) ? 1 : 0);
}
res[k - 1] = ((__builtin_popcount(stor)) & 1);
// cerr << SZ(res) << endl;
// FOR(i, 0, n + k)
// {
// cerr <<res[i];
// }
// cerr << endl;
return res;
}
vi retrieve(vi data)
{
int n = (1 << (31 - __builtin_clz(SZ(data)))) - 1, k = SZ(data) - n;
// cerr << "N = " << n << " K = " << k << endl;
// cerr << "DATA HAS\n";
// FOR(i, 0, n + k)
// {
// cerr << data[i];
// }
// cerr << endl;
vi res(n);
FOR(i, 0, n) res[i] = data[i];
int stor = 0;
FOR(i, n, n + k - 1)
{
stor *= 2; if (data[i - n]) stor++;
}
// cerr << "STOR = " << stor << endl;
if ((__builtin_popcount(stor) & 1) != data[n + k - 1]) return res;
FOR(i, 0, n) if (data[i]) stor ^= (i + 1);
if (stor == 0) return res;
res[stor - 1] ^= 1;
return res;
//find the guys that don't match or smth
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
6 ms |
900 KB |
secret mismatch |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
11 ms |
2748 KB |
secret mismatch |
| 2 |
Halted |
0 ms |
0 KB |
- |
