Submission #250579

#	Time	Username	Problem	Language	Result	Execution time	Memory
250579		DanerZein	Combo (IOI18_combo)	C++14	97 / 100	40 ms	620 KiB

combo

#include "combo.h"

std::string guess_sequence(int N) {
  std::string s = "";
  std::string l = "";
  if(press("AB")>0){
    if(press("A")==1){
        s+="A";
        l="BXY";
    }
    else{
        s+="B";
        l="AXY";
    }
  }
  else{
    if(press("X")==1){
        s+="X";
        l="ABY";
    }
    else{
        s+="Y";
        l="ABX";
    }
  }
if(N==1)
    return s;
  while(s.length()<N-1){
    int b=press(s+l[0]+l[0]+s+l[0]+l[1]+s+l[0]+l[2]+s+l[1]),le=s.length();
    if(b==2+le){
        s+=l[0];
    }
    if(b==1+le){
        s+=l[1];
    }
    if(b==le){
        s+=l[2];
    }
  }
  if(press(s+"A")>s.length()){
    s+="A";
  }
  else{
    if(press(s+"B")>s.length()){
        s+="B";
    }
    else{
        if(press(s+"X")>s.length()){
            s+="X";
        }
        else
            s+="Y";
    }
  }
  /*if(press(s+"A")>s.length()){
    s+="A";
  }
  else{
    if(press(s+"B")>s.length()){
        s+="B";
    }
    else{
        if(press(s+"X")>s.length()){
            s+="X";
        }
        else
            s+="Y";
    }
  }*/

  return s;

}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:28:19: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   28 |   while(s.length()<N-1){
      |         ~~~~~~~~~~^~~~
combo.cpp:40:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |   if(press(s+"A")>s.length()){
      |      ~~~~~~~~~~~~^~~~~~~~~~~
combo.cpp:44:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     if(press(s+"B")>s.length()){
      |        ~~~~~~~~~~~~^~~~~~~~~~~
combo.cpp:48:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         if(press(s+"X")>s.length()){
      |            ~~~~~~~~~~~~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 92 / 95