Problem	lunchbox
User	Helloworld
Submission Time	2026-02-12 22:22:13
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

lunchbox.cpp: In function ‘int main()’:
lunchbox.cpp:15:9: error: no match for ‘operator>>’ (operand types are ‘std::istream’ {aka ‘std::basic_istream<char>’} and ‘std::vector<int>’)
15 | cin >> num;
| ~~~ ^~ ~~~
| | |
| | std::vector<int>
| std::istream {aka std::basic_istream<char>}
In file included from /usr/include/c++/9/iostream:40,
from lunchbox.cpp:1:
/usr/include/c++/9/istream:120:7: note: candidate: ‘std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]’
120 | operator>>(__istream_type& (*_