Problem	adjlist
User	LYM2025
Submission Time	2026-08-24 16:42:27
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

adjlist.cpp: In function ‘int main()’:
adjlist.cpp:25:8: error: no match for ‘operator<<’ (operand types are ‘std::ostream’ {aka ‘std::basic_ostream<char>’} and ‘std::vector<long long int>::iterator’ {aka ‘__gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >’})
25 | cout<<r[k].begin();
| ~~~~^~~~~~~~~~~~~~
| | |
| | std::vector<long long int>::iterator {aka __gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >}
| std::ostream {aka std::basic_ostream<char>}
In file included from /usr/include/c++/9/istream:39,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from adjlist.cpp:1:
/us