Submission #1043792

#	Time	Username	Problem	Language	Result	Execution time	Memory
1043792		sofpp	Combo (IOI18_combo)	C++14	100 / 100	21 ms	1040 KiB

combo

#include<bits/stdc++.h>
#include "combo.h"
using namespace std;
 
 
string guess_sequence(int N) {
  string p = ""; string S = "";
  if(press("AB")>=1){
    if(press("A")==1){
      p+="A";
    }
    else{
      p+="B";
    }
  }
  else{
    if(press("X")>=1){
      p+="X";
    }
    else{
      p+="Y";
    }
  }
 
 
  vector<string> a;
  if(p!="A")a.push_back("A");
  if(p!="B")a.push_back("B");
  if(p!="X")a.push_back("X");
  if(p!="Y")a.push_back("Y");
 
  for(int i=1;i<N-1;i++){
    string temp="";
    temp+=(p+a[0]+p+a[1]+a[0]+p+a[1]+a[1]+p+a[1]+a[2]);
    int res = press(temp); 
    if(res==1+p.size()){
      p+=a[0];
    }
    else if(res==2+p.size()){
      p+=a[1];
    }else{
      p+=a[2];
    }
  }
  if(N>1){
    if(press(p+a[0]+p+a[1])>=1+p.size()){
      if(press(p+a[0])==1+p.size()){
        p+=a[0];
      }
      else{
        p+=a[1];
      }
    }
    else{
      p+=a[2];
    }
  }
  return p;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:36:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     if(res==1+p.size()){
      |        ~~~^~~~~~~~~~~~
combo.cpp:39:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     else if(res==2+p.size()){
      |             ~~~^~~~~~~~~~~~
combo.cpp:46:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |     if(press(p+a[0]+p+a[1])>=1+p.size()){
      |        ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:47:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |       if(press(p+a[0])==1+p.size()){
      |          ~~~~~~~~~~~~~^~~~~~~~~~~~

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