Submission #1046593

#	Time	Username	Problem	Language	Result	Execution time	Memory
1046593		Jer	Combo (IOI18_combo)	C++17	0 / 100	0 ms	344 KiB

combo

#include "combo.h"
using namespace std;

string guess_sequence(int n)
{

  int res;
  string letters[] = {"A", "B", "Y", "X"}, start, curr;

  for (auto x : letters)
  {
    start = x;
    if (press(x) == 1)
      break;
  }

  while (curr.size() < n)
  {
    for (auto x : letters)
    {
      if (x != start)
        res = press(start + x);
      if (res > curr.size())
      {
        curr += x;
        break;
      }
    }
  }

  return curr;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:17:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   17 |   while (curr.size() < n)
      |          ~~~~~~~~~~~~^~~
combo.cpp:23:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |       if (res > curr.size())
      |           ~~~~^~~~~~~~~~~~~
combo.cpp:23:11: warning: 'res' may be used uninitialized in this function [-Wmaybe-uninitialized]
   23 |       if (res > curr.size())
      |           ^~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95