Problem	postcard
User	Lsc111
Submission Time	2023-06-08 11:19:34
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

postcard.cpp: In function ‘int main()’:
postcard.cpp:23:14: error: no match for ‘operator<’ (operand types are ‘std::ostream’ {aka ‘std::basic_ostream<char>’} and ‘int’)
23 | cout < 0;
| ~~~~ ^ ~
| | |
| | int
| std::ostream {aka std::basic_ostream<char>}
postcard.cpp:23:14: note: candidate: ‘operator<(int, int)’ <built-in>
23 | cout < 0;
| ~~~~~^~~
postcard.cpp:23:14: note: no known conversion for argument 1 from ‘std::ostream’ {aka ‘std::basic_ostream<char>’} to ‘int’
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from postcard.cpp:1:
/usr/include/c++/9/bits/regex.h:1048:5: note: candidate: ‘template<class _BiIter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const std: