oj.uz

Submission #218834

# Submission time Handle Problem Language Result Execution time Memory
218834 2020-04-02T19:42:50 Z Lawliet "The Lyuboyn" code (IZhO19_lyuboyn) C++14
14 / 100
 204 ms 6508 KB 
#include <bits/stdc++.h>

using namespace std;

int n, k, t;

vector< int > ans;

void printBinary(int k)
{
	for(int i = n - 1 ; i >= 0 ; i--)
	{
		if( k & (1 << i) ) printf("1");
		else printf("0");
	}

	printf("\n");
}

int toNumber(string s)
{
	int val = 0;

	for(int i = 0 ; i < s.size() ; i++)
	{
		val *= 2;
		val += s[i] - '0';
	}

	return val;
}

bool isGood(int a, int b, int v)
{
	int aux = a^b;
	return ( __builtin_popcount(aux) == v );
}

void printAnswer(int firstValue)
{
	printf("%d\n",(int) ans.size());

	int indFirst = 0;

	for(int i = 0 ; i < ans.size() ; i++)
		if( ans[i] == firstValue ) indFirst = i;

	int lim = indFirst - 1;
	if( lim == -1 ) lim = ans.size() - 1;

	for(int i = indFirst ; i != lim ; i++, i %= ans.size())
		printBinary( ans[i] );

	printBinary( ans[lim] );
}

int main()
{
	string s;
	cin >> n >> k >> t >> s;

	if( k%2 == 0 )
	{
		printf("-1\n");
		return 0;
	}

	int firstValue = toNumber( s );

	ans.push_back( 0 );
	ans.push_back( 1 );

	for(int i = 2 ; i <= k + 1 ; i++)
	{
		int curSz = ans.size();

		for(int j = 0 ; j < ans.size() ; j++)
			ans[j] = 2*ans[j];

		for(int j = curSz - 1 ; j >= 0 ; j--)
			ans.push_back( ans[j] + 1 );
	}

	if( k == 1 )
	{
		for(int i = k + 2 ; i <= n ; i++)
		{
			int curSz = ans.size();

			for(int j = 0 ; j < ans.size() ; j++)
				ans[j] = 2*ans[j];

			for(int j = curSz - 1 ; j >= 0 ; j--)
				ans.push_back( ans[j] + 1 );
		}

		printAnswer( firstValue );
		return 0;
	}

	for(int i = 1 ; i < ans.size() ; i += 2)
		ans[i] = (1 << (k + 1)) - 1 - ans[i];

	for(int i = 0 ; i < ans.size() ; i++)
		printf("... %d\n",ans[i]);

	for(int i = k + 2 ; i <= n ; i++)
	{
		int curSz = ans.size();

		int indFirst = -1;

		for(int j = 1 ; j < ans.size() && indFirst == -1 ; j++)
		{
			if( !isGood( ans[j] , ans.back() , k - 1 ) ) continue;
			if( !isGood( ans[j - 1] , ans[0] , k - 1 ) ) continue;

			indFirst = j;
		}

		assert( indFirst != -1 );

		for(int j = 0 ; j < ans.size() ; j++)
			ans[j] = 2*ans[j];

		int lim = indFirst - 1;
		if( lim == -1 ) lim = curSz - 1;

		for(int j = indFirst ; j != lim ; j++, j %= curSz)
			ans.push_back( ans[j] + 1 );

		ans.push_back( ans[lim] + 1 );
	}

	printAnswer( firstValue );
}

Compilation message

lyuboyn.cpp: In function 'int toNumber(std::__cxx11::string)':
lyuboyn.cpp:24:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0 ; i < s.size() ; i++)
                  ~~^~~~~~~~~~
lyuboyn.cpp: In function 'void printAnswer(int)':
lyuboyn.cpp:45:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0 ; i < ans.size() ; i++)
                  ~~^~~~~~~~~~~~
lyuboyn.cpp: In function 'int main()':
lyuboyn.cpp:77:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0 ; j < ans.size() ; j++)
                   ~~^~~~~~~~~~~~
lyuboyn.cpp:90:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int j = 0 ; j < ans.size() ; j++)
                    ~~^~~~~~~~~~~~
lyuboyn.cpp:101:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 1 ; i < ans.size() ; i += 2)
                  ~~^~~~~~~~~~~~
lyuboyn.cpp:104:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0 ; i < ans.size() ; i++)
                  ~~^~~~~~~~~~~~
lyuboyn.cpp:113:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 1 ; j < ans.size() && indFirst == -1 ; j++)
                   ~~^~~~~~~~~~~~
lyuboyn.cpp:123:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0 ; j < ans.size() ; j++)
                   ~~^~~~~~~~~~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Ok

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 256 KB Expected integer, but "..." found

Subtask #3
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Ok
2 Correct 4 ms 384 KB Ok
3 Correct 5 ms 384 KB Ok
4 Correct 4 ms 256 KB Ok
5 Correct 5 ms 384 KB Ok
6 Correct 4 ms 256 KB Ok
7 Correct 4 ms 256 KB Ok
8 Correct 5 ms 308 KB Ok

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 201 ms 6508 KB Ok
2 Correct 93 ms 3312 KB Ok
3 Correct 5 ms 384 KB Ok
4 Correct 4 ms 256 KB Ok
5 Correct 4 ms 256 KB Ok

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB Expected integer, but "..." found
2 Halted 0 ms 0 KB -

Subtask #6
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 204 ms 6504 KB Expected integer, but "..." found
2 Halted 0 ms 0 KB -

Subtask #7
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 201 ms 6508 KB Ok
2 Correct 93 ms 3312 KB Ok
3 Correct 5 ms 384 KB Ok
4 Correct 4 ms 256 KB Ok
5 Correct 4 ms 256 KB Ok
6 Incorrect 5 ms 384 KB Expected integer, but "..." found
7 Halted 0 ms 0 KB -

Subtask #8
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 106 ms 3952 KB Expected integer, but "..." found
2 Halted 0 ms 0 KB -