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#include <string>
#include <algorithm>
#include <vector>
#include <iostream>
using namespace std;
class ConundrumReloaded{
public:
  int minimumLiars(string answers){
    vector<string> v;
    string s;
    int f=0;
    int INF=(1<<28);
    for( int i=0; i<answers.size(); i++ ){
      if( answers[i] == '?' ){
        f = 1;
        if( s.size() > 0 ){
          v.push_back( s ); s = "";
        }
      } else {
        s += answers[i];
      }
    }
    if( s.size() > 0 ){
      if( answers[0] == '?' ) v.push_back( s );
      else if( v.size() == 0 ) v.push_back( s );
      else v[0] = s + v[0];
    }
    int ret = 0;
    for( auto it=v.begin(); it!=v.end(); ++ it ){
      s = *it;
      cout << s << endl;
      int d0=0,d1=1;
      char c0='H',c1='L';
      for( int i=0; i<s.size(); i++ ){
        c0 = (c0==s[i]) ? 'H' : 'L';
        c1 = (c1==s[i]) ? 'H' : 'L';
        if( c0 == 'L' ) d0++;
        if( c1 == 'L' ) d1++;
        cout << c0 << c1 << ' ';
      }
      if( !f && c0!='H' ) d0 = INF;
      if( !f && c1!='L' ) d1 = INF;
      if( !f && d1 != INF && c1=='L' ) d1--;
      if( d0 == INF && d1 == INF ) ret = -1;
      else ret += min( d0, d1 );
    }
    return ret;
  }
};

prog.cpp: In member function ‘int ConundrumReloaded::minimumLiars(std::string)’:
prog.cpp:13:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for( int i=0; i<answers.size(); i++ ){
                                  ^
prog.cpp:34:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for( int i=0; i<s.size(); i++ ){
                              ^
/usr/lib/gcc/i486-linux-gnu/4.8/../../../i386-linux-gnu/crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
collect2: error: ld returned 1 exit status

Standard output is empty