Eroare de compilare: main.cpp: In function 'Matrix query(int, int, int, int, int)': main.cpp:110:16: error: reference to 'identity' is ambiguous 110 | return identity; | ^~~~~~~~ In file included from /usr/include/c++/12.2.1/bits/iterator_concepts.h:38, from /usr/include/c++/12.2.1/bits/stl_iterator_base_types.h:71, from /usr/include/c++/12.2.1/bits/stl_construct.h:61, from /usr/include/c++/12.2.1/bits/char_traits.h:46, from /usr/include/c++/12.2.1/ios:40, from /usr/include/c++/12.2.1/istream:38, from /usr/include/c++/12.2.1/fstream:38, from main.cpp:1: /usr/include/c++/12.2.1/bits/ranges_cmp.h:47:10: note: candidates are: 'struct std::identity' 47 | struct identity | ^~~~~~~~ main.cpp:15:22: note: 'Matrix identity' 15 | Matrix tree[120005], identity, a[30005]; | ^~~~~~~~ main.cpp: In function 'int main()': main.cpp:123:9: error: reference to 'identity' is ambiguous 123 | identity.mat[i][i] = 1; | ^~~~~~~~ /usr/include/c++/12.2.1/bits/ranges_cmp.h:47:10: note: candidates are: 'struct std::identity' 47 | struct identity | ^~~~~~~~ main.cpp:15:22: note: 'Matrix identity' 15 | Matrix tree[120005], identity, a[30005]; | ^~~~~~~~ Non zero exit status: 1