Submission #706046

#	Time	Username	Problem	Language	Result	Execution time	Memory
706046		mseebacher	Combo (IOI18_combo)	C++17	100 / 100	28 ms	636 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
using namespace std;
 
string guess_sequence(int n) {
 	string s = "";
	 vector<char> se = {'A','B','X','Y'};
	 if(press("AB")){
			s = press("A") ? 'A' : 'B';
	 }else{
       	    s = press("X") ? 'X' : 'Y';
	 }
	 se.erase(find(se.begin(),se.end(),s[0]));
	 
	 while(s.length() < n-1){
		string zwischen = s+se[0]+se[0]+s+se[0]+se[1]+s+se[0]+se[2]+s+se[1];
		int erg = press(zwischen);
		if(erg == s.length()+2){
			s+=se[0];
		}else if(erg == s.length()+1){
			s+=se[1];
		}else{
			s+=se[2];
		}
	 }
  	 if(s.length() == n) return s;
	 if(press(s+se[0]) == n) return s+se[0];
	 if(press(s+se[1]) == n) return s+se[1];
	 return s+se[2];
	 
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:15:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   15 |   while(s.length() < n-1){
      |         ~~~~~~~~~~~^~~~~
combo.cpp:18:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |   if(erg == s.length()+2){
      |      ~~~~^~~~~~~~~~~~~~~
combo.cpp:20:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |   }else if(erg == s.length()+1){
      |            ~~~~^~~~~~~~~~~~~~~
combo.cpp:26:19: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   26 |     if(s.length() == n) return s;
      |        ~~~~~~~~~~~^~~~

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