Problem	adjmatrix
User	ZhangBowen
Submission Time	2025-04-23 18:46:53
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

adjmatrix.cpp: In function ‘int main()’:
adjmatrix.cpp:3:16: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
3 | long long n,e;cin>>n,e;
| ^~~
| std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,
from adjmatrix.cpp:1:
/usr/include/c++/9/iostream:60:18: note: ‘std::cin’ declared here
60 | extern istream cin; /// Linked to standard input
| ^~~
adjmatrix.cpp:5:7: error: ‘begin’ was not declared in this scope
5 | fill(begin(foo),end(foo),0);
| ^~~~~
adjmatrix.cpp:5:7: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from adjmatrix.cpp:1:
/usr/include/c++/9/valarray:1224:5: note: ‘std::begin’
1224 | begin(const valarray<_Tp>& __va)
| ^~~~~
In file included from /usr/incl