| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 849562 | chilengaming | Combo (IOI18_combo) | C++17 | Compilation error | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
#include "combo.h"
using namespace std;
char first_char () {
int tmp = press("AB");
if(tmp == 2) {
return 'A';
} else
if(tmp == 1) {
if(press("A") == 1) {
return 'A';
} else {
return 'B';
}
} else {
if(press("X") == 1) {
return 'X';
} else {
return 'Y';
}
}
}
char last_char(string s, string tmp, int n) {
if(press(s + tmp[0]) == n) return tmp[0]; else
if(press(s + tmp[1]) == n) return tmp[1]; else
return tmp[2];
}
string guess_sequence(int N) {
string s = "";
char c_first = first_char();
string tmp;
if(c_first == 'A') tmp = "BXY"; else
if(c_first == 'B') tmp = "AXY"; else
if(c_first == 'X') tmp = "ABY"; else
tmp = "ABX";
while(s.size() < N - 1) {
int t = press(s + tmp[0] + tmp[0] + s + tmp[0] + tmp[1] + s + tmp[0] + tmp[2] + s + tmp[1]);
if(t == s.size() + 2) {
s = s + tmp[0];
} else
if(t == s.size() + 1) {
s = s + tmp[1];
} else {
s = s + tmp[2];
}
}
char c_last = last_char(s, tmp, N);
string t1 = "", t2 = "";
t1 += first_char;
t2 += last_char;
return t1 + s + t2;
}
Compilation message (stderr)
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:39:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
39 | while(s.size() < N - 1) {
| ~~~~~~~~~^~~~~~~
combo.cpp:41:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
41 | if(t == s.size() + 2) {
| ~~^~~~~~~~~~~~~~~
combo.cpp:44:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
44 | if(t == s.size() + 1) {
| ~~^~~~~~~~~~~~~~~
combo.cpp:52:8: error: no match for 'operator+=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'char()')
52 | t1 += first_char;
| ~~~^~~~~~~~~~~~~
In file included from /usr/include/c++/10/string:55,
from /usr/include/c++/10/bits/locale_classes.h:40,
from /usr/include/c++/10/bits/ios_base.h:41,
from /usr/include/c++/10/ios:42,
from /usr/include/c++/10/istream:38,
from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from combo.cpp:1:
/usr/include/c++/10/bits/basic_string.h:1157:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]' (near match)
1157 | operator+=(_CharT __c)
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:1157:7: note: conversion of argument 1 would be ill-formed:
combo.cpp:52:11: error: invalid conversion from 'char (*)()' to 'char' [-fpermissive]
52 | t1 += first_char;
| ^~~~~~~~~~
| |
| char (*)()
In file included from /usr/include/c++/10/string:55,
from /usr/include/c++/10/bits/locale_classes.h:40,
from /usr/include/c++/10/bits/ios_base.h:41,
from /usr/include/c++/10/ios:42,
from /usr/include/c++/10/istream:38,
from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from combo.cpp:1:
/usr/include/c++/10/bits/basic_string.h:1139:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
1139 | operator+=(const basic_string& __str)
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:1139:38: note: no known conversion for argument 1 from 'char()' to 'const std::__cxx11::basic_string<char>&'
1139 | operator+=(const basic_string& __str)
| ~~~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/10/bits/basic_string.h:1148:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(const _CharT*) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
1148 | operator+=(const _CharT* __s)
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:1148:32: note: no known conversion for argument 1 from 'char()' to 'const char*'
1148 | operator+=(const _CharT* __s)
| ~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/basic_string.h:1170:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(std::initializer_list<_Tp>) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
1170 | operator+=(initializer_list<_CharT> __l)
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:1170:43: note: no known conversion for argument 1 from 'char()' to 'std::initializer_list<char>'
1170 | operator+=(initializer_list<_CharT> __l)
| ~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/basic_string.h:1182:2: note: candidate: 'template<class _Tp> std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_If_sv<_Tp, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&> std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(const _Tp&) [with _Tp = _Tp; _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
1182 | operator+=(const _Tp& __svt)
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:1182:2: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/10/bits/move.h:57,
from /usr/include/c++/10/bits/stl_pair.h:59,
from /usr/include/c++/10/bits/stl_algobase.h:64,
from /usr/include/c++/10/bits/specfun.h:45,
from /usr/include/c++/10/cmath:1927,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
from combo.cpp:1:
/usr/include/c++/10/type_traits: In substitution of 'template<bool _Cond, class _Tp> using enable_if_t = typename std::enable_if::type [with bool _Cond = false; _Tp = std::__cxx11::basic_string<char>&]':
/usr/include/c++/10/bits/basic_string.h:117:8: required by substitution of 'template<class _CharT, class _Traits, class _Alloc> template<class _Tp, class _Res> using _If_sv = std::enable_if_t<std::__and_<std::is_convertible<const _Tp&, std::basic_string_view<_CharT, _Traits> >, std::__not_<std::is_convertible<const _Tp*, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>*> >, std::__not_<std::is_convertible<const _Tp&, const _CharT*> > >::value, _Res> [with _Tp = char(); _Res = std::__cxx11::basic_string<char>&; _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
/usr/include/c++/10/bits/basic_string.h:1182:2: required by substitution of 'template<class _Tp> std::__cxx11::basic_string<char>::_If_sv<_Tp, std::__cxx11::basic_string<char>&> std::__cxx11::basic_string<char>::operator+=<_Tp>(const _Tp&) [with _Tp = char()]'
combo.cpp:52:11: required from here
/usr/include/c++/10/type_traits:2554:11: error: no type named 'type' in 'struct std::enable_if<false, std::__cxx11::basic_string<char>&>'
2554 | using enable_if_t = typename enable_if<_Cond, _Tp>::type;
| ^~~~~~~~~~~
combo.cpp:53:8: error: no match for 'operator+=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'char(std::string, std::string, int)' {aka 'char(std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>, int)'})
53 | t2 += last_char;
| ~~~^~~~~~~~~~~~
In file included from /usr/include/c++/10/string:55,
from /usr/include/c++/10/bits/locale_classes.h:40,
from /usr/include/c++/10/bits/ios_base.h:41,
from /usr/include/c++/10/ios:42,
from /usr/include/c++/10/istream:38,
from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from combo.cpp:1:
/usr/include/c++/10/bits/basic_string.h:1157:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]' (near match)
1157 | operator+=(_CharT __c)
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:1157:7: note: conversion of argument 1 would be ill-formed:
combo.cpp:53:11: error: invalid conversion from 'char (*)(std::string, std::string, int)' {aka 'char (*)(std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>, int)'} to 'char' [-fpermissive]
53 | t2 += last_char;
| ^~~~~~~~~
| |
| char (*)(std::string, std::string, int) {aka char (*)(std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>, int)}
In file included from /usr/include/c++/10/string:55,
from /usr/include/c++/10/bits/locale_classes.h:40,
from /usr/include/c++/10/bits/ios_base.h:41,
from /usr/include/c++/10/ios:42,
from /usr/include/c++/10/istream:38,
from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from combo.cpp:1:
/usr/include/c++/10/bits/basic_string.h:1139:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
1139 | operator+=(const basic_string& __str)
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:1139:38: note: no known conversion for argument 1 from 'char(std::string, std::string, int)' {aka 'char(std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>, int)'} to 'const std::__cxx11::basic_string<char>&'
1139 | operator+=(const basic_string& __str)
| ~~~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/10/bits/basic_string.h:1148:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(const _CharT*) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
1148 | operator+=(const _CharT* __s)
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:1148:32: note: no known conversion for argument 1 from 'char(std::string, std::string, int)' {aka 'char(std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>, int)'} to 'const char*'
1148 | operator+=(const _CharT* __s)
| ~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/basic_string.h:1170:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(std::initializer_list<_Tp>) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
1170 | operator+=(initializer_list<_CharT> __l)
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:1170:43: note: no known conversion for argument 1 from 'char(std::string, std::string, int)' {aka 'char(std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>, int)'} to 'std::initializer_list<char>'
1170 | operator+=(initializer_list<_CharT> __l)
| ~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/basic_string.h:1182:2: note: candidate: 'template<class _Tp> std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_If_sv<_Tp, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&> std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator+=(const _Tp&) [with _Tp = _Tp; _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
1182 | operator+=(const _Tp& __svt)
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:1182:2: note: template argument deduction/substitution failed:
combo.cpp:50:10: warning: unused variable 'c_last' [-Wunused-variable]
50 | char c_last = last_char(s, tmp, N);
| ^~~~~~