이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define pb push_back
#define rl "\n"
#define ll long long
#include "combo.h"
using namespace std;
string guess_sequence(int N)
{
int n=N;
string ans="";
string g1="XY",g2="AB";
if(press(g1)==0)swap(g1,g2);
string s1="";
s1+=g1[0];
string s2="";
s2+=g1[1];
string s3="";
char a='A',b='B',x='X',y='Y';
string p1="";
if(press(s1)==1)ans+=s1[0];
else ans+=s2[0];
if(ans[0]==a)swap(a,y);
else if(ans[0]==b)swap(b,y);
else if(ans[0]==x)swap(x,y);
s1=ans+a;
s2=ans+b;
s3=ans+x;
p1=s1+a+s1+b+s1+x+s2;
while(ans.size()!=n-1)
{
int pr=press(p1);
if(pr==ans.size()+2)
{
ans=s1;
}
else if(pr==ans.size()+1)
{
ans=s2;
}
else
{
ans=s3;
}
s1=ans+a;
s2=ans+b;
s3=ans+x;
p1=s1+a+s1+b+s1+x+s2;
}
string res="";
res+=ans+a+ans+b;
int pr1=press(res);
if(pr1==n)
{
res=ans+a;
pr1=press(res);
if(pr1==n)
{
ans+=a;
}
else
ans+=b;
return ans;
}
else
{
ans+=x;
return ans;
}
}
컴파일 시 표준 에러 (stderr) 메시지
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:32:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
32 | while(ans.size()!=n-1)
| ~~~~~~~~~~^~~~~
combo.cpp:35:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
35 | if(pr==ans.size()+2)
| ~~^~~~~~~~~~~~~~
combo.cpp:39:19: 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(pr==ans.size()+1)
| ~~^~~~~~~~~~~~~~
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