Submission #19476032


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#define LOCAL
#define _USE_MATH_DEFINES
#include <array>
#include <cassert>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <iomanip>
#include <string>
#include <sstream>
#include <vector>
#include <queue>
#include <stack>
#include <list>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <algorithm>
#include <complex>
#include <cmath>
#include <numeric>
#include <bitset>
#include <functional>
#include <random>
#include <ctime>

using namespace std;

template <typename A, typename B>
ostream& operator <<(ostream& out, const pair<A, B>& a) {
  out << "(" << a.first << "," << a.second << ")";
  return out;
}
template <typename T, size_t N>
ostream& operator <<(ostream& out, const array<T, N>& a) {
  out << "["; bool first = true;
  for (auto& v : a) { out << (first ? "" : ", "); out << v; first = 0;} out << "]";
  return out;
}
template <typename T>
ostream& operator <<(ostream& out, const vector<T>& a) {
  out << "["; bool first = true;
  for (auto& v : a) { out << (first ? "" : ", "); out << v; first = 0;} out << "]";
  return out;
}
template <typename T, class Cmp>
ostream& operator <<(ostream& out, const set<T, Cmp>& a) {
  out << "{"; bool first = true;
  for (auto& v : a) { out << (first ? "" : ", "); out << v; first = 0;} out << "}";
  return out;
}
template <typename U, typename T, class Cmp>
ostream& operator <<(ostream& out, const map<U, T, Cmp>& a) {
  out << "{"; bool first = true;
  for (auto& p : a) { out << (first ? "" : ", "); out << p.first << ":" << p.second; first = 0;} out << "}";
  return out;
}
#ifdef LOCAL
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
#else
#define trace(...) 42
#endif
template <typename Arg1>
void __f(const char* name, Arg1&& arg1){
  cerr << name << ": " << arg1 << endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args){
  const char* comma = strchr(names + 1, ',');
  cerr.write(names, comma - names) << ": " << arg1 << " |";
  __f(comma + 1, args...);
}

typedef long long int64;
typedef pair<int, int> ii;
#define SZ(x) (int)((x).size())
template <typename T> static constexpr T inf = numeric_limits<T>::max() / 2;
const int MOD = 1e9 + 7;
mt19937 mrand(random_device{}());
int rnd(int x) { return mrand() % x; }

struct fast_ios {
  fast_ios() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(10);
  };
} fast_ios_;

typedef vector<int> vec;

int main() {
  int n;
  cin >> n;

  const int N = 256;
  vector<bitset<N>> a;
  a.push_back(1);

  for (int k = 2; k <= n; ++k) {
    vector<bitset<N>> b;
    bitset<N> all = 0;
    for (int i = 1; i < (1 << k); i += 2) all[i] = 1;
    for (auto& mask : a) {
      bitset<N> nmask = 0, x = 0;
      for (int i = 0; i < (1 << (k - 1)); ++i) {
        if (mask[i]) {
          nmask[i * 2] = 1;
          x[i * 2 + 1] = 1;
        }
      }
      // trace(k, nmask, x);
      b.push_back(nmask | x);
      b.push_back(nmask | (all ^ x));
    }
    bitset<N> nmask = 0;
    for (int i = 0; i < (1 << k); i += 2) nmask[i] = 1;
    b.push_back(nmask);
    a = b;
    // trace(k, all, a);
    // map<ii, int> cnt;
    // for (auto& mask : a) {
    //   for (int i = 0; i < (1 << k); ++i) {
    //     for (int j = i + 1; j < (1 << k); ++j) {
    //       if (mask[i] && mask[j]) cnt[{i, j}]++;
    //       if (!mask[i] && !mask[j]) cnt[{i, j}]++;
    //     }
    //   }
    // }
    // trace(cnt);
  }
  cout << SZ(a) << '\n';
  for (auto& mask : a) {
    string cur = string(1 << n, 'B');
    for (int i = 0; i < (1 << n); ++i) {
      if (mask[i]) cur[i] = 'A';
    }
    cout << cur << '\n';
  }

  return 0;
}

Submission Info

Submission Time
Task D - Choosing Up Sides
User cuiaoxiang
Language C++ (Clang 10.0.0)
Score 700
Code Size 3825 Byte
Status AC
Exec Time 12 ms
Memory 3188 KB

Compile Error

./Main.cpp:78:42: warning: unused variable 'inf' [-Wunused-const-variable]
template <typename T> static constexpr T inf = numeric_limits<T>::max() / 2;
                                         ^
./Main.cpp:79:11: warning: unused variable 'MOD' [-Wunused-const-variable]
const int MOD = 1e9 + 7;
          ^
2 warnings generated.

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 700 / 700
Status
AC × 1
AC × 9
Set Name Test Cases
Sample sample_01.txt
All random_01.txt, random_02.txt, random_03.txt, random_04.txt, random_05.txt, random_06.txt, random_07.txt, random_08.txt, sample_01.txt
Case Name Status Exec Time Memory
random_01.txt AC 12 ms 3188 KB
random_02.txt AC 3 ms 3148 KB
random_03.txt AC 2 ms 3096 KB
random_04.txt AC 2 ms 3156 KB
random_05.txt AC 2 ms 3020 KB
random_06.txt AC 2 ms 3008 KB
random_07.txt AC 2 ms 3156 KB
random_08.txt AC 2 ms 3052 KB
sample_01.txt AC 1 ms 3040 KB