Submission #1137633

#	Time	Username	Problem	Language	Result	Execution time	Memory
1137633		KaleemRazaSyed	COVID tests (CEOI24_covid)	C++20	10 / 100	1000 ms	408 KiB

Main

#include<bits/stdc++.h>

using namespace std;

int n;
double p;

bool ask(vector<bool> mask)
{
  assert(mask.size() == (size_t)n);
  
  std::string mask_str(n, ' ');
  for (int i = 0; i < n; i++)
    mask_str[i] = mask[i] ? '1' : '0';
  
  printf("Q %s\n", mask_str.c_str());
  fflush(stdout);
  
  char answer;
  scanf(" %c", &answer);
  return answer == 'P';
}

vector<bool> solve()
{
  vector<bool> v(n, false), mask(n, false);

  for(int i = 0; i < n; i ++)
    {
      mask[i] = true;
      v[i] = ask(mask);
      mask[i] = false;
    }
  
  return v;
}

int main()
{
  int T;
  scanf("%d %lf %d", &n, &p, &T);


  for (int i = 0; i < T; i++) {
    vector<bool> answer = solve();
    assert(answer.size() == (size_t)n);
      
    string answer_str(n, ' ');
    for (int j = 0; j < n; j++)
      answer_str[j] = answer[j] ? '1' : '0';
      
    printf("A %s\n", answer_str.c_str());
    fflush(stdout);
      
    char verdict;
    scanf(" %c", &verdict);
    if (verdict == 'W')
      exit(0);
  }
    
  return 0;
}

Compilation message (stderr)

Main.cpp: In function 'bool ask(std::vector<bool>)':
Main.cpp:20:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |   scanf(" %c", &answer);
      |   ~~~~~^~~~~~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:41:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |   scanf("%d %lf %d", &n, &p, &T);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:56:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |     scanf(" %c", &verdict);
      |     ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 10 / 10
• Subtask 2: 0 / 90