Submission #889263

#	Time	Username	Problem	Language	Result	Execution time	Memory
889263		Hugo1729	Combo (IOI18_combo)	C++11	5 / 100	1 ms	596 KiB

combo

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

using namespace std;

// int press(string q){return 1;}

string guess_sequence(int N){
  string ans;
  string letters[3];
  if (press("A")==1) {ans="A";letters[0]="B";letters[1]="X";letters[2]="Y";}
  if (press("B")==1) {ans="B";letters[0]="A";letters[1]="X";letters[2]="Y";}
  if (press("X")==1) {ans="X";letters[0]="B";letters[1]="A";letters[2]="Y";}
  if (press("Y")==1) {ans="Y";letters[0]="B";letters[1]="X";letters[2]="A";}
  
  while(ans.length()<=N-2){
    int n=ans.length();

    int query = press(ans+letters[0]+ans+letters[1]+letters[0]+ans+letters[1]+letters[1]+ans+letters[1]+letters[2]);

    if (query==n+1) ans+=letters[0];
    else if (query==n+2) ans+=letters[1];
    else ans+=letters[2];
  }

  if (press(ans+letters[0])==N) ans+=letters[0];
  else if (press(ans+letters[1])==N) ans+=letters[1];
  else ans+=letters[2];

  return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:16:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   16 |   while(ans.length()<=N-2){
      |         ~~~~~~~~~~~~^~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95