Submission #335307

#	Time	Username	Problem	Language	Result	Execution time	Memory
335307		fadi57	Combo (IOI18_combo)	C++14	100 / 100	112 ms	584 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>

//#include"grader.cpp"
using namespace std;
std::string guess_sequence(int N) {
  std::string p = "";
string s="ABXY";
string first;

int query=press("AB");
string ret;
if(query){
    ret=press("A")?"A":"B";
}else{

 ret=press("X")?"X":"Y";
}

first=ret;

s.erase(find(s.begin(),s.end(),first[0]));
//cout<<s<<endl;
int si=N;si--;
int now=2;
for(int i=2;i<N;i++){
string tr=ret+s[0]+ret+s[1]+s[0]+ret+s[1]+s[1]+ret+s[1]+s[2];
//cout<<"DEBUG "<<tr<<endl;
query=press(tr);
if(query==now){ret+=s[0];}else if(query==(now+1)){ret+=s[1];}else{ret+=s[2];}
now++;
}if(ret.size()==N){return ret;}
if(press(ret+s[0])==N){
    ret+=s[0];
}else if(press(ret+s[1])==N){ret+=s[1];}else{
 ret+=s[2];

}//cout<<ret<<endl;
  return ret;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:32:15: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   32 | }if(ret.size()==N){return ret;}
      |     ~~~~~~~~~~^~~

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