Submission #437668

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
437668	2021-06-26 19:39:19	ecnerwala	Bit Shift Registers (IOI21_registers)	C++17	100 / 100	1 ms	332 KiB

registers

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#include "registers.h"
#include <bits/stdc++.h>
void construct_instructions(int S, int N, int K, int Q) {
  const int B = 2000;
  {
    std::vector<bool> tmp(B);
    std::fill(tmp.begin()+N*K, tmp.end(), true);
    append_store(1, tmp);
    append_or(0, 0, 1);
  }
  int L = 8*sizeof(N) - __builtin_clz(N-1);
  N = (1 << L);
  if (S == 0) {
    const int K_MSK = 99;
    {
      std::vector<bool> tmp(B);
      for (int i = 0; i < B; i += K) tmp[i] = true;
      append_store(K_MSK, tmp);
    }
    while (N > 1) {
      append_right(1, 0, N/2*K);
      append_xor(2, 0, 1);
      append_not(3, 0);
      append_add(3, 3, 1);
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 25 / 25
• Subtask 5: 13 / 13
• Subtask 6: 29 / 29