Submission #130413

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
130413	2019-07-15 07:17:22	rondojim	Mechanical Doll (IOI18_doll)	C++17	100 / 100	126 ms	10448 KiB

doll

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#include "doll.h"
using namespace std;
int n;
int seg[1 << 19];
int bitRev(int x, int n) {
  int r = 0;
  while (n >>= 1) {
    r <<= 1;
    r ^= (x & 1);
    x >>= 1;
  }
  return r;
}
const int inf = 1e9;
void create_circuit(int m, vector<int> A) {
  int sz = 1;
  A.push_back(0);
  n = A.size();
  while (sz < n) sz <<= 1;
  for(int i = 0; i < sz; ++i) seg[i + sz] = inf;
  for(int i = 0, j = 0; i < sz; ++i){
    int k = bitRev(i, sz);
    if(k < sz - n) continue;
    seg[k + sz] = A[j++];
  }
 
 
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• Subtask 1: 2 / 2
• Subtask 2: 4 / 4
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 18 / 18
• Subtask 6: 56 / 56