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Submission #795146

# Submission time Handle Problem Language Result Execution time Memory
795146 2023-07-27T07:02:53 Z Johann Bit Shift Registers (IOI21_registers) C++17
58 / 100
 1 ms 304 KB 
#include "registers.h"
#include "bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef pair<ll, ll> pii;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<pii> vpii;
typedef vector<vpii> vvpii;
typedef vector<vvpii> vvvpii;
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

void construct_instructions(int s, int n, int k, int q)
{

	vb mask;
	// mask for 1
	mask.assign(2000, 0);
	mask[0] = 1;
	append_store(98, mask);

	auto swap = [&](int a, int b, int filter)
	{
		// smaller stuff lands in a
		append_not(2, a);
		append_add(2, 2, 98);
		append_add(2, 2, b); // b - a
		{
			append_xor(3, a, 2);
			append_xor(3, b, 3);
			append_and(95, 3, filter); // filters the carrybits we prepared with the xor
			append_right(96, 95, k);
			append_not(96, 96);
			append_add(96, 96, 98);
			append_add(94, 95, 96); // with filter - (filter >> k) we build filters with k bits
		}
		append_xor(2, a, b);
		append_and(2, 2, 94);
		append_xor(a, a, 2);
		if (s == 1)
			append_xor(b, b, 2);
	};

	if (s == 0)
	{
		mask.assign(2000, 0);
		int next = 1;
		while (next < n)
			next *= 2;
		fill(mask.begin() + n * k, mask.begin() + next * k, 1);
		append_store(99, mask);
		append_or(0, 0, 99);
		while (next > 1)
		{
			append_right(1, 0, (next / 2) * k);
			vb filter;
			filter.assign(2000, 0);
			for (int i = 0; i < next / 2; ++i)
				filter[i * k + k] = 1;
			append_store(97, filter);
			swap(0, 1, 97);
			next >>= 1;
		}
	}
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct

Subtask #5
0.0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Incorrect sorting
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Incorrect sorting
2 Halted 0 ms 0 KB -