oj.uz

Submission #911179

# Submission time Handle Problem Language Result Execution time Memory
911179 2024-01-18T14:43:04 Z daoquanglinh2007 "The Lyuboyn" code (IZhO19_lyuboyn) C++17
0 / 100
 165 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;

#define flipbit(x, i) x ^= (1<<(i))

const int a[] = {0, 7, 9, 2, 5, 8, 3, 4, 10, 1, 6, 11, 12, 16, 23, 13, 17, 22, 15, 19, 20, 14, 18, 21, 24, 31, 39, 32, 43, 25, 30, 38, 33, 42, 27, 28, 36, 35, 40, 26, 29, 37, 34, 41, 46, 50, 53, 44, 48, 55, 45, 49, 54, 59, 60, 47, 57, 62, 51, 61, 58, 52, 63, 56};
const int b[] = {0, 1, 3, 2, 6, 7, 5, 4};

string bS;
int N, K, S, T;
vector <int> v, ans;
int cnt[262144];

vector <int> build(int N){
	if (N == 1){
		vector <int> ans = {0, 1};
		return ans;
	}
	vector <int> a = build(N-1);
	for (int i = 0; i < (1<<(N-1)); i++){
		a.push_back((1<<(N-1))+a[(1<<(N-1))-1-i]);
	}
	return a;
}

void show(int x){
	for (int i = N-1; i >= 0; i--)
		cout << ((x>>i)&1);
	cout << endl;
}

vector <int> build3(int N){
	if (N == 6){
		vector <int> ans(0);
		for (int i = 0; i < 64; i++) ans.push_back(a[i]);
		return ans;
	}
	vector <int> tmp = build3(N-3), ans = tmp;
	for (int i = 1; i < 8; i++){
		int x = ans.back()&((1<<(N-3))-1);
		x ^= (1<<(N-4))+(1<<(N-5));
		for (int j = 0; j < (1<<(N-3)); j++)
			ans.push_back((b[i]<<(N-3))+(x^tmp[j]));
	}
	return ans;
}

int main(){
	freopen("LYUBOYN.inp", "r", stdin);
	freopen("LYUBOYN.out", "w", stdout);
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	
	cin >> N >> K >> T >> bS;
	for (int i = 0; i < N; i++)
		if (bS[i] == '1') S += (1<<(N-1-i));
		
	v = build(N);
	ans.clear();
	ans.push_back(S);
	for (int i = 1; i < (1<<N); i++){
		ans.push_back(ans[i-1]);
		for (int j = 0; j < N; j++)
			if (((v[i]^v[i-1])>>j)&1){
				for (int t = 0; t < K; t++)
					flipbit(ans[i], (j+t)%N);
			}
	}
	bool ok = 1;
	for (int x : ans){
		if (cnt[x]){
			ok = 0;
			break;
		}
		cnt[x]++;
	}
	if (ok){
		cout << (1<<N) << '\n';
		/*for (int x : ans){
			for (int i = N-1; i >= 0; i--)
				cout << ((x>>i)&1);
			cout << '\n';
		}*/
		return 0;
	}
	if (K != 3 || N == 3){
		assert(K == 3);
		cout << "-1\n";
		return 0;
	}
	ans = build3(N);
	cout << (1<<N) << '\n';
	/*for (int &x : ans){
		x ^= S;
		for (int i = N-1; i >= 0; i--)
			cout << ((x>>i)&1);
		cout << '\n';
	}*/
	return 0;
}

Compilation message

lyuboyn.cpp: In function 'int main()':
lyuboyn.cpp:49:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |  freopen("LYUBOYN.inp", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
lyuboyn.cpp:50:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |  freopen("LYUBOYN.out", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 0.0

# Verdict Execution time Memory Grader output
1 Runtime error 159 ms 262144 KB Execution killed with signal 9

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 161 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
0 / 3.0

# Verdict Execution time Memory Grader output
1 Runtime error 161 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Runtime error 157 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Runtime error 165 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #6
0 / 18.0

# Verdict Execution time Memory Grader output
1 Runtime error 159 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #7
0 / 31.0

# Verdict Execution time Memory Grader output
1 Runtime error 157 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #8
0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 162 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -