Submission #444826

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
444826	2021-07-15 14:07:12	Xellos	Bit Shift Registers (IOI21_registers)	C++17	22 / 100	1 ms	332 KiB

registers

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#include "registers.h"
#include <vector>
using namespace std;
constexpr static int B = 2000;
void construct_instructions(int s, int n, int k, int q) {
  // pad with 1
  vector<bool> ones_pad(B, false);
  for(int i = n*k; i < 128*k; i++) ones_pad[i] = true;
  append_store(1, ones_pad);
  append_or(2, 0, 1);
  int offset = 2;
  vector<bool> first_bits_0[11];
  for(int i = 1; i <= k; i++) {
    first_bits_0[i].resize(B, false);
    for(int j = 0; j < 128*k; j++) first_bits_0[i][j] = (j%k >= i);
  }
  vector<bool> last_bits_0[11];
  for(int i = 1; i <= k; i++) {
    last_bits_0[i].resize(B, false);
    for(int j = 0; j < 128*k; j++) last_bits_0[i][j] = (j%k < k-i);
  }
  append_store(0, last_bits_0[1]);
  append_store(1, first_bits_0[1]);
  for(int j = 0; j < 7; j++) {
    // offset holds "input"
    // split to 2 parts
    append_right(offset+1, offset, k<<(6-j));
    append_xor(offset+2, offset, offset+1); // X
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 0 / 11
• Subtask 3: 12 / 12
• Subtask 4: 0 / 25
• Subtask 5: 0 / 13
• Subtask 6: 0 / 29