이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "combo.h"
#include<bits/stdc++.h>
using namespace std;
char key[] = { 'A','B','X','Y' };
string guess_sequence(int N) {
string s = "";
char element[3];
int pos = 0;
int idx = 0;
if (press("AB") >= 1) {
if (press("A") >= 1) s = "A", idx = 0;
else s = "B", idx = 1;
}
else {
if (press("XY") >= 1) {
if (press("X") >= 1) s="X", idx = 2;
else s="Y", idx = 3;
}
}
for (int i = 0; i <= 3; i++) {
if (idx == i) continue;
element[pos++] = key[i];
}
for (int i = 1; i < N-1; i++) {
string p = s + element[0] + element[0] + s + element[0] + element[1] + s + element[0] + element[2] + s + element[1];
int cnt = press(p);
if (cnt == s.size() + 2) s = s + element[0];
else if (cnt == s.size() + 1) s = s + element[1];
else s = s + element[2];
}
if (press(s + element[0])==s.size()+1) s += element[0];
else if (press(s + element[1])==s.size()+1) s += element[1];
else s += element[2];
return s;
}
컴파일 시 표준 에러 (stderr) 메시지
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:32:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
32 | if (cnt == s.size() + 2) s = s + element[0];
| ~~~~^~~~~~~~~~~~~~~
combo.cpp:33:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
33 | else if (cnt == s.size() + 1) s = s + element[1];
| ~~~~^~~~~~~~~~~~~~~
combo.cpp:37:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | if (press(s + element[0])==s.size()+1) s += element[0];
| ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:38:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
38 | else if (press(s + element[1])==s.size()+1) s += element[1];
| ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
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