Submission #1034768

#	Time	Username	Problem	Language	Result	Execution time	Memory
1034768		Boas	Bit Shift Registers (IOI21_registers)	C++17	21 / 100	0 ms	348 KiB

registers

#include <bits/stdc++.h>
using namespace std;

#define loop(x, i) for (int i = 0; i < x; i++)
#define ALL(x) begin(x), end(x)
#define pb push_back

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<vii> vvii;
typedef vector<bool> vb;

#include "registers.h"

// first free register index
// int i = 1;
void splitInput()
{
	append_right(1, 0, 2); // get b into seperate register
	append_and(0, 0, 10);
}

// 01 if value, else 00
void onlyKeep(int reg, int target, int v)
{
	if (v == 0)
		append_xor(target, reg, 13);
	if (v == 1)
	{
		append_xor(target, reg, 12);
	}
	else if (v == 2)
		append_xor(target, reg, 11);
	if (v == 3)
	{
		append_add(target, reg, 11);
	}
	else
		append_add(target, target, 11);
	append_right(target, target, 2);
	cerr << "value should be " << v << '\n';
	append_print(target);
}

void construct_instructions(int s, int n, int k, int q)
{
	if (s == 0 && n == 2 && k == 2)
	{
		vb mask1(2000);
		mask1[0] = 1;
		vb mask1001(2000), mask0110(2000);
		mask0110[1] = 1;
		mask0110[2] = 1;
		mask1001[0] = 1;
		mask1001[3] = 1;
		append_store(98, mask0110);
		append_store(99, mask1001);
		append_store(10, mask1);

		append_xor(1, 98, 0);
		append_xor(2, 99, 0);

		append_add(1, 10, 1);
		append_right(1, 1, 4);
		append_add(2, 10, 2);
		append_right(2, 2, 4);

		append_right(3, 0, 2); // get b into seperate register

		// 5
		append_and(0, 0, 3);
		append_add(0, 0, 1);
		append_add(0, 0, 2);
	}
}

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 0 / 12
• Subtask 4: 0 / 25
• Subtask 5: 0 / 13
• Subtask 6: 0 / 29