Problem	pairofballs
User	YSH2020
Submission Time	2025-12-12 16:57:34
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

pairofballs.cpp: In function ‘int main()’:
pairofballs.cpp:18:17: error: ‘class std::queue<std::pair<int, std::vector<int> > >’ has no member named ‘top’; did you mean ‘pop’?
18 | auto cur=done.top(); done.pop();
| ^~~
| pop
pairofballs.cpp:24:7: error: ‘w’ was not declared in this scope
24 | ptr[w]++;
| ^
pairofballs.cpp:27:74: error: no matching function for call to ‘std::queue<std::pair<int, std::vector<int> > >::push(<brace-enclosed initializer list>)’
27 | if (c[a[w][ptr[w]]].size()==2) done.push({a[w][ptr[w]],c[a[w][ptr[w]]]});}
| ^
In file included from /usr/include/c++/9/queue:64,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:86,
from pairofballs.cpp:1:
/usr/include/c++/9/bits/stl_queue.h:259:7: note: can