Submission #139643

#	Time	Username	Problem	Language	Result	Execution time	Memory
139643		Bazarkuly2003	Combo (IOI18_combo)	C++14	0 / 100	38 ms	280 KiB

combo

#include "combo.h"
#include<bits/stdc++.h>
using namespace std;
string guess_sequence(int N){
string s,q,t;
long long m,k;
if(press("AB")==1){
if(press("A")==1){s="A";q="BXY";}else{s="B";q="AXY";}}else
if(press("X")==1){s="X";q="ABY";}else{s="Y";q="ABX";}

while(s.size()<N){
	
	if(N<3){
		if(k==3)k=0;
	t=s+q[k];
m=press(t);
	if(m==s.size()+1)s+=q[k];
	k++;}
	
	else{
t=s+q[0]+q[0]+s+q[0]+q[1]+s+q[0]+q[2]+s+q[1];
m=press(t);
if(m==s.size()+0)s+=q[2];else
if(m==s.size()+1)s+=q[1];else 
if(m==s.size()+2)s+=q[0];}

}
 return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:11:15: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   11 | while(s.size()<N){
      |       ~~~~~~~~^~
combo.cpp:17:6: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |  if(m==s.size()+1)s+=q[k];
      |     ~^~~~~~~~~~~~
combo.cpp:23:5: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 | if(m==s.size()+0)s+=q[2];else
      |    ~^~~~~~~~~~~~
combo.cpp:24:5: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 | if(m==s.size()+1)s+=q[1];else
      |    ~^~~~~~~~~~~~
combo.cpp:25:5: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 | if(m==s.size()+2)s+=q[0];}
      |    ~^~~~~~~~~~~~
combo.cpp:15:9: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized]
   15 |  t=s+q[k];
      |         ^

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