Submission #471393

#	Time	Username	Problem	Language	Result	Execution time	Memory
471393		aZvezda	"The Lyuboyn" code (IZhO19_lyuboyn)	C++14	3 / 100	337 ms	6440 KiB

lyuboyn

#include <bits/stdc++.h>
using namespace std;
#define endl "\n"
typedef long long ll;

vector<int> build(int n, int k) {
	if(k == 1) {
		if(n == 1) {
			return {0, 1};
		}
		auto ans = build(n - 1, k);
		auto cpy = ans;
		reverse(cpy.begin(), cpy.end());
		vector<int> ret;
		for(auto it : ans) {
			ret.push_back(it * 2);
		}
		for(auto it : cpy) {
			ret.push_back(it * 2 + 1);
		}
		return ret;
	}
	auto ans = build(n - 2, k - 2);
	vector<int> ret;

	for(auto it : ans) {
		ret.push_back(it * 4 + 0);		
		ret.push_back(it * 4 + 3);		
	}

	for(auto it : ans) {
		ret.push_back((it ^ (1 << (k - 1))) * 4 + 1);		
		ret.push_back((it ^ (1 << (k - 1))) * 4 + 2);		
	}
	return ret;
}

signed main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	int n, k, t, s;
	cin >> n >> k >> t;
	string str;
	cin >> str;
	for(auto it : str) {
		s = (s * 2) + (it - '0');
	}
	s = (1 << n) - 1 - s;
	if(k % 2 == 0) {
		cout << -1 << endl;
		return 0;
	}
	auto ans = build(n, k);
	cout << ans.size() << endl;
	for(auto it : ans) {
		int real = it ^ s;
		for(int i = 0; i < n; i ++) {
			cout << (bool)(real & (1 << i));
		}
		cout << endl;
	}
	return 0;
}

Compilation message (stderr)

lyuboyn.cpp: In function 'int main()':
lyuboyn.cpp:47:4: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   47 |  s = (1 << n) - 1 - s;
      |  ~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 0
• Subtask 2: 0 / 5
• Subtask 3: 3 / 3
• Subtask 4: 0 / 11
• Subtask 5: 0 / 15
• Subtask 6: 0 / 18
• Subtask 7: 0 / 31
• Subtask 8: 0 / 17