Submission #436382

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
4363822021-06-24 13:06:25stoyan_malininCombo (IOI18_combo)C++14
10 / 100
89 ms444 KiB
#include <iostream>
#include <vector>
#include <string>
#include "combo.h"
#ifdef __LOCAL
#include "grader.cpp"
#endif // __LOCAL
using namespace std;
char extend(string &ans)
{
const vector <char> options = {'A', 'B', 'X', 'Y'};
for(char c: options)
{
if(ans.size()!=0 && ans[0]==c) continue;
if(press(ans+c)==ans.size()+1) return c;
}
}
string guess_sequence(int N)
{
string ans = "";
for(int i = 0;i<N;i++) ans += extend(ans);
return ans;
}
 
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Compilation message (stderr)

combo.cpp: In function 'char extend(std::string&)':
combo.cpp:19:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |         if(press(ans+c)==ans.size()+1) return c;
      |            ~~~~~~~~~~~~^~~~~~~~~~~~~~
combo.cpp:14:54: warning: control reaches end of non-void function [-Wreturn-type]
   14 |     const vector <char> options = {'A', 'B', 'X', 'Y'};
      |                                                      ^
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