game.cpp:7:1: error: 'vector' does not name a type
7 | vector<int> cnt(1501);
| ^~~~~~
game.cpp: In function 'int hasEdge(int, int)':
game.cpp:9:2: error: 'cnt' was not declared in this scope; did you mean 'int'?
9 | cnt[max(u,v)]++;
| ^~~
| int
game.cpp:9:6: error: 'max' was not declared in this scope; did you mean 'std::max'?
9 | cnt[max(u,v)]++;
| ^~~
| std::max
In file included from /usr/include/c++/9/algorithm:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:65,
from game.cpp:2:
/usr/include/c++/9/bits/stl_algo.h:3462:5: note: 'std::max' declared here
3462 | max(initializer_list<_Tp> __l, _Compare __comp)
| ^~~