Submission #103820

#	Time	Username	Problem	Language	Result	Execution time	Memory
103820		beso123	Combo (IOI18_combo)	C++14	100 / 100	55 ms	572 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
using namespace std;
string a="ABXY";
string guess_sequence(int N){
	if(N==1){
		if(press("A")==1)
		return "A";
		if(press("B")==1)
		return "B";
		if(press("X")==1)
		return "X";
		return "Y";
	}
string s="";
int num,i=0;
string b;
s=a[0];
s+=a[1];
num=press(s);
if(num>=1){
	s=a[0];
	if(press(s)==1){
		b+=s;
		a.erase(0,1);
	}
	else{
		b+=a[1];
		a.erase(1,1);
	}
}
else{
	s=a[2];
	if(press(s)){
		b+=s;
		a.erase(2,1);
	}
	else{
		b+=a[3];
		a.erase(3,1);
	}
}
while((int)b.size()<N-1){
		string c=b+a[0]+b+a[1]+a[0]+b+a[1]+a[2]+b+a[1]+a[1];
		int ps=press(c);
		if(ps==b.size())
		b+=a[2];
		else{
		if(ps==b.size()+1)
		b+=a[0];
		else
		if(ps==b.size()+2)
		b+=a[1];
}
}
s=b+a[0];
if(press(s)==b.size()+1)
return s;

s=b+a[1];
if(press(s)==b.size()+1)
return s;

s=b+a[2];
return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:46:8: 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(ps==b.size())
      |      ~~^~~~~~~~~~
combo.cpp:49:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |   if(ps==b.size()+1)
      |      ~~^~~~~~~~~~~~
combo.cpp:52:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |   if(ps==b.size()+2)
      |      ~~^~~~~~~~~~~~
combo.cpp:57:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 | if(press(s)==b.size()+1)
      |    ~~~~~~~~^~~~~~~~~~~~
combo.cpp:61:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 | if(press(s)==b.size()+1)
      |    ~~~~~~~~^~~~~~~~~~~~
combo.cpp:16:9: warning: unused variable 'i' [-Wunused-variable]
   16 | int num,i=0;
      |         ^

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