Problem	strikes
User	VNHbest
Submission Time	2026-08-16 16:39:59
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

strikes.cpp: In function ‘void update(long long int)’:
strikes.cpp:38:24: error: ‘__gnu_cxx::__alloc_traits<std::allocator<__gnu_pbds::tree<long long int, __gnu_pbds::null_type, std::less<long long int>, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update> >, __gnu_pbds::tree<long long int, __gnu_pbds::null_type, std::less<long long int>, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update> >::value_type’ {aka ‘class __gnu_pbds::tree<long long int, __gnu_pbds::null_type, std::less<long long int>, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update>’} has no member named ‘count’
38 | if (deep[depth[a]].count(pre[a]) > 0) deep[depth[a]].erase(pre[a]);
| ^~~~~