Problem	sadtrainer2
User	HighLithop
Submission Time	2026-04-29 22:19:20
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

sadtrainer2.cpp: In function ‘int main()’:
sadtrainer2.cpp:25:2: error: ‘tree’ was not declared in this scope; did you mean ‘__gnu_pbds::tree’?
25 | tree<A, null_type,less<A>, rb_tree_tag,tree_order_statistics_node_update> present;
| ^~~~
| __gnu_pbds::tree
In file included from sadtrainer2.cpp:3:
/usr/include/c++/9/ext/pb_ds/assoc_container.hpp:635:9: note: ‘__gnu_pbds::tree’ declared here
635 | class tree : public PB_DS_TREE_BASE
| ^~~~
sadtrainer2.cpp:25:7: error: ‘A’ was not declared in this scope
25 | tree<A, null_type,less<A>, rb_tree_tag,tree_order_statistics_node_update> present;
| ^
sadtrainer2.cpp:25:10: error: ‘null_type’ was not declared in this scope
25 | tree<A, null_type,less<A>, rb_tree_tag,tree_order_statistics_node_update> present;
| ^~~~~~~~~
sadtrainer2.cpp:25:10: note: suggested alternatives:
In file included fro